If any body knows where to find information to compare Vista firewall with other competite one, i will appreciate it.

Comparative Feature list.

There are very few Vista compatible firewalls available - and none that I would recommend. Comodo is supposed to be releasing one - but I haven't seen it yet.

Is the Vista Firewall still only One Way, as in XP?

No, but it takes a bit of work to adjust the 2 way feature.

AFAIK, you can adjust it through group policy settings or through 3rd party tools. Here's some links:

http://www.microsoft.com/technet/community...guy/cg0106.mspx
http://searchwindowssecurity.techtarget.co...1217062,00.html
http://www.pctools.com/firewall/

But, IMO, this is the best article on them (once you skim past the recommended other firewalls):
http://members.rushmore.com/~jsky/id34.html

It also mentions the tool that Jacee recommended in this post ( http://www.bleepingcomputer.com/forums/ind...=vista+firewall ) which is the Sphinx Software Vista Firewall Control available for free here: http://sphinx-soft.com/Vista/index.html

I'm going to try this one myself when I get time.