Windows 7

I just received Arduino Duemilanove. I loaded the software and tried the blink demo. When I went to verify, it hangs up. I am using windows 7. I set the correct com port The program and board work great on My computer using Windows XP.
Any help, please

it hangs up

How rude. I hate being hung up on.

Jocularity aside; what do you mean by "hangs up"?

When I click compile, the ide says, compiling, for a long time. I have to do a ctrl, alt, delete, to get out of the program