What is the best free antivirus and firewall software for Vista?

For Wndows XP I've always used AVG and ZoneAlarm, with Ad-aware for scans, and that's always worked well, so I was wondering about Vista.

What is the best free antivirus and firewall software for Vista?norton 360

I would use either AVG or AVAST both work well with Vista, but I think AVG is better, for a free firewall I would get one from PC Tools

What is the best free antivirus and firewall software for Vista?photoshop

I would use AVG for the anti-virus.

http://free.grisoft.com/

And I would use Spybot Search and Destroy for spyware.

http://www.safer-networking.org/en/index...
I have vista, and AVG seems to work fine for me and not hog too many resources or nag too much, so thats my anti virus sorted.

For anti spyware or adware I just use windows defender, seems to work great

Hope this helps
I have Vista at work, and AVG works great for me. I love it.
Try SpyBot Doctor.
Try Bullguard http://www.bullguard.com/