Originally posted by: labgeek
That's going to be very program dependent. Most (or at least many) Windows programs allow this by default. Starting 2 calculator programs isn't a problem. Others that attempt to access the same resources at the same time may have problems. For these the programmer(s) often take steps to prevent multiple instances running at the same time. Perhaps if you mention what program you want to run multiple instances of, we could better answer your question.
Originally posted by: PrincessGuard
Uh, have you looked into the Allow Multiple Instances option in Winamp preferences?
Originally posted by: calvink
If the program doesn't is there a way to?