Commented Unassigned: .NET Framework exception [25226]

An unhandled exception occured in VirtualRouterManager.exe [2636].

OS: WinXP x64 (.NET 4.0)

I'm timed, and need something w/in this week before I start looking up network packets through my computer...

anyone know if a good replacement software??
(Win7 won't let me share my network on my laptop)
Comments: ** Comment from web user: Tcll **

oh, I forgot to mention, the interface of this one looks much nicer :)