I am using Windows Vista and I am trying to import 3 public keys into PGP using
WinPT and every time I do PGP.EXE crashes.

Unfortunately I can be of no more help than this as there is nothing else shown.
This is the crash report from the windows logs.

Faulting application gpg.exe, version 0.0.0.0, time stamp 0x47ea8c2e, faulting
module msvcrt.dll, version 7.0.6002.18005, time stamp 0x49e0379e, exception code
0x40000015, fault offset 0x000641b5, process id 0xa08, application start time
0x01c9e9b734171d0f.