Bitdefender 10 and Windows XP Network

[jaws.man]

Hi,

I've installed on 2 PC's Bitdefender Internet Security 10. Both PC's installed with Windows XP SP2, 2 LAN Cards and a SMC switch connecting te PC's.

Both PC's can navegate in the internet, but not on a network (using a workgroup).

Whats the problem? Can anyone help?

Jaws