Internet Connextion Firewall disappeared

Hi,

I activated ICF on a new WinXP installation. I would like to deactivate it
again for some reasons, but:

The "Advanced" tab in the Properties box of the Network Connection I use is
no longer there ???? But it is under that tab where ICF is enabled or
disabled ?? Why did it disapear ? Where to find ICF ? I am logged on my
machine as the local administrator.

I also have the secure remote Checkpoint VPN client installed.

Sylvain C.