Patches written in vfp6 sp3

InstallShield Express adds an icon & shortcut to c:\my dir\patch1.exe

Later, I create patch2.exe and when the user upgrades his software, there is are patch2.exe & patch1.exe shortcuts on his desktop.

1) I'd like to remove the patch1 shortcut from the desktop when patch2.exe is run.
2) I also put them into which I would also like to remove using patch2.exe

Thanks for any assistance...
Robert