Change and Remove buttons are missing for certain programs in add or remove programs list in windows Xp
If you find that for some programs listed in Add or Remove programs, the change and remove buttons not available, then you will have to perform a small registry change.
Open the registry editor. (Start > run > Regedit)
Then navigate to the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
There enter into the key of the application for which the change and remove buttons are not getting displayed.
Then look for the key “NoRemove” and change its value to 0.
Then look for the key “NoModify” and change its value to 0.
Now open Add or Remove Programs and you will find that the change and remove buttons appear.(Some times a restart may be necessary).