both mine r exspired,,, whats the best free ones to download for vista??

Stuff I use is posted here:
http://www.chevelles.com/forums/showthread.php?t=260034

Who's your internet provider? Comcast and ATT have McAfee you can download install for free. No issues since we've been using it.

Road Runner provides CA anti-virus, anti-spyware, anti-spam, and personal firewall free to their customers.
It seems to be pretty good.
http://shop.ca.com/virus/antivirus.aspx