Make this infrequently used tool useful. Ban programs from the Most Frequently Used Programs List, change the number of programs on the list, or do away with it altogether to make more room for the Pinned Programs List.
Windows keeps track of programs you use  frequently and puts them on the Most Frequently Used Programs List, which  appears on the new Windows XP-style Start menu (not the Classic-style Start  menu) between the Pinned Items List at the top and the All Programs link at the  bottom. The Most Frequently Used Programs List is a quick way to access programs  you use often. But the rules for when programs appear on that list and disappear  from the list are murky at best, and there appears to be no logic to what  programs appear there.
There is some hidden logic, however. XP bans a variety of  programs from the list. If any of the following words or phrases is included in  the program's shortcut name, the program will be excluded from the list:  Documentation, Help, Install, More Info, Readme, Read me, Read First, Setup,  Support, and What's New.
Additionally, the following executables are excluded from the  list: Setup.exe, Install.exe, Isuninst.exe,  Unwise.exe, Unwise32.exe, St5unst.exe, Rundll32.exe,  Explorer.exe, Icwconn1.exe, Inoculan.exe,  Mobsync.exe, Navwnt.exe, Realmon.exe, and  Sndvol32.exe.
 2.5.1. Banning Programs from the List
You might want to ban other programs from  the list, not just those that XP bans by default. Just because you use a program  a time or two doesn't mean you want it on the Start menu's Most Frequently Used  Programs List. You can ban programs from the list using a Registry hack.
Run the Registry Editor [Hack #83] and go to  HKEY_CLASSES_ROOT\Applications. Underneath this key, you'll find a  series of subkeys, each representing an application. The primary purpose of  these subkeys, as you'll see later in this hack, is to determine whether the  program appears on the Open With dialog box that appears whenever you try to  open an unknown file type. But you can also add a value to any of the subkeys  which will ban programs from appearing on the Most Frequently Used Programs  List.
Look for a subkey that is the executable name of the  application you want to ban from the listfor example, visio.exe for the  Visio business illustration program. Once you find the application's subkey,  create a new String value for that subkey, named NoStartPage.  Leave the value blank. Exit the Registry. You might have to reboot for the  setting to take effect and the program to be banned from the list.
 2.5.1.1 Another use for HKEY_CLASSES_ROOT\Applications
While you're rooting around in  HKEY_CLASSES_ROOT\Applications, you might want to hack the Open With dialog box (shown in Figure 2-6) that appears  whenever you try to open an unknown file type. Each application's subkey in  HKEY_CLASSES_ROOT\Applications controls whether that particular  application will show up on the dialog box.
  Figure 2-6. Hacking the Open With dialog box
If you want to ban a particular program from the Open With  dialog box, look for the application's subkey underneath  HKEY_CLASSES_ROOT\Applications, add a String value named  NoOpenWith, and leave the value blank.
 2.5.1.2 Ban programs from the Most Frequently Used Programs List with Tweak UI
If you  don't want to muck around in the Registry, you can ban programs from the Most  Frequently Used Programs List using Tweak UI [Hack #8]. Run Tweak UI, and choose Taskbar 
 XP Start Menu. You'll see the screen shown  in Figure 2-7, with a list of  programs and checks next to most or all of them.
  Figure 2-7. Using Tweak UI to ban programs from the Most Frequently Used Programs List
Each program with a check next to it will be allowed to appear  on the Most Frequently Used Programs List. To stop a program from appearing on  the list, uncheck the box and click OK.
 2.5.2. Change the Number of Programs That Appear on the List
By default, the Most  Frequently Used Programs List has room for six programs, but you can change that  default and have more or fewer programs appear. Right-click the Start button and  choose Properties 
 Customize 
 General. The Customize Start Menu dialog  box, shown in Figure 2-8,  appears. To customize the number of programs to include on the list, edit the  "Number of programs on Start menu" box. You can choose any number between 0 and  30. Be aware, though, that depending on your screen resolution and whether  you're using large or small icons, the entire list might not appear if you  choose a large number. No matter how high your resolution is, for example, don't  expect there to be room for 30 programs.
  Figure 2-8. Customizing the number of programs on the Most Frequently Used Programs List
2.5.3. Make Room for the Pinned Programs List
The Pinned Programs List, just above the Most  Frequently Used Programs List on the XP-style Start menu, gives you instant  access to any program you want. You, rather than the operating system, decide  what programs go there. To add a program to it, drag the program's icon or  filename to the Start menu, and when the menu pops up, drag it to the spot on  the list where you want it to appear.
This list makes a lot more sense than the Most Frequently Used  Programs List: after all, you know better than XP what programs you want within  easy reach. So, do what I do: kill the Most Frequently Used Programs List as a  way to make more room for the Pinned Programs List. When you kill the Most  Frequently Used Programs List, there will be a big blank space between the  Pinned Programs List and the All Programs button. Drag programs to fill that  space; the shortcuts will stay there until you delete them.
You can kill the Most  Frequently Used Programs List with a Registry hack. Run the Registry Editor [Hack #83] and go to  HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer.  Create a new DWORD called NoStartMenuMFUprogramsList and give  it a value of 1. You'll have to reboot or log off and back on for the  setting to take effect. When it does, the nice big blank space will be left for  you to fill with pinned programs.