WinPDT with Windows 64-bit
Setting up WinPDT for 64-bit Windows
WinPDT cannot run from the Program Files (x86) WinPRISM folder. Trying to run it from this location will cause it to display an error stating that it is not compatible with 64 bit operating systems.
Create a folder in C://Program Files called WinPRISM.
From C://Program Files (x86)/WinPRISM copy the follow files:
WinPDT.exe
WPPdt.dll
WPComm.dll
GCL52FW.dll
Paste these files in the foler you created (C://Program Files/WinPRISM).
Make sure you copy to the new folder. Do not move them.
Create a shortcut on your Desktop to C://Program Files/WinPRISM/WinPDT.exe