I use the Windows Vista firewall. Others may say that it is not a very good firewall, but personally I have not had any problems with it, nor did I have any problems with the XP firewall that I used previous to getting Vista.
I did use Comodo a few weeks ago but I started getting a lot of blue screens since I started using it. After I went back the Windows Vista firewall I stopped getting them.
In my opinion, if you use a good anti virus program, anti spyware programs, then any free firewall (including the Windows firewall) will be good enough, and even more so if you are using a modem/router that has a SPI firewall built into it.
If you are intent on buying Kapersky antivirus remember that it is dificult to find a firewall that is compatible wiith it.This is more important with XP than Vista.It also contains a good antispyware program.If you want another firewall far better to buy Kaspersky Internet Security in the first place.
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