Vista - Router problems!

[Anachron]

Can't connect to websides!!
Router Firmware is up-to-date!
Router is Vista compatible.
New Vista installed. ( Included all upgrades ).
Anyone got an idea?

Edit: But I can connect via games and chat programms ( ICQ, Wc3 )

 

[enouwee]

Firewall?

 

[Anachron]

Windows, non blocked.