I use VirtualPC 4.0. I have heard it is not as stable or secure as actually using a PC, which makes sense. However, I guess it would also depend on the OS you are using. Anyway, I posted another thread about security concerns, which no one has responded to. What kind of security concerns are there with emulators? And how stable is VirtualPC? I recently upgraded to a cable connection, and I am increasingly worried about security because of it.