P.S.Guard startup information for Windows XP, Windows Vista and other versions of Microsoft Windows
Smitfraud variant.
This page helps identify spyware, viruses, and other programs that you don't understand what they are, or want to know if PSGuard.exe is a safe file or if you can safely remove or delete PSGuard.exe. Use at your own risk and if unsure either do a virus/anti adware scan and seek advice from a professional adware remover