Wireless laptop on a network.

Hi,
Right at the moment I have a PC, Laptop and Xbox all connected to a
Belkin 4 port router. Now I've been given a Belkin wireless USB network
adapter and a Belkin wireless network card (PCMCIA). Can I use these
with say another laptop. ie: Connecting the USB adapter to my PC and
then just hooking up the notebook card to a laptop and then giving the
laptop access to the net via my router or ICS?

As you can probably tell I don't know jack about this kind of stuff.

Thanks
Mark.