This Ventrillo? http://www.ventrilo.com/about.php
If so, I can't see Windows 7 mentioned in the section at the bottom titled "Architecture".
Their download page fails to mention Windows 7 either;
If I have the right Ventrillo then it looks like you may be out of luck. However I do see Windows 7 mentioned a few times in their forums, so perhaps you can check through there for further information;
So, I got my new laptop (ASUS G51VX) on Friday, and it was running smoothly up until I tried using AOL Instant Messenger for the first time (version 7.1 or whatever the newest version is). It locked up my lappy (I had to do a hard reboot) every time I tried to send an IM. I didn't really care, 'cause Trillian works just fine. Case closed.
However, yesterday when I installed Ventrilo ... upon connecting to the Vent server, each and every time, my lappy would freeze in the same exact manner. D'oh. Vent's a must.
I'm running Windows 7 64-bit (which had 33 updates when I booted up my lappy for the first time), and I've tried both the 32 and 64-bit versions of the Vent client. Oh, and my internet connection is wired. So it's not a WiFi issue. Or a firewall issue.
These are the only two programs that have given me any trouble. If anyone can offer some advice, or at least tell me what those two pieces of software have in common, that'd be greatly appreciated.