NOD32 MSN YAHOO IM Problem

I love nod32 but whenever i install it, it never lets me sign in to MSN or Yahoo Messenger.
Is there any solution to this problem?
Answer #1
Make sure you allow access though the firewall ;>
Answer #2
Make sure you allow access though the firewall ;>
yea thats probably whats happening
Answer #3
thanks i will try that
Answer #4
there is ni firewall option in NOD32 Anti virus 4 Business Edition