BT Voyager 200 Problems / XP.

Hoping someone can help quickly . Trying to set up a wireless LAN or
if anyone could reccomend anything else.

Using a BT Voyager 2000 Wireless ADSL modem to connect to adsl.

I then have a -

desktop machine 1 (wireless) (xp pro)
desktop machine connected (wireless)(xp home)and
Laptop connected (wireless) (xp pro)

All machines can access internet etc.. do normal stuff.

But what i want is for each machine to see each other a la LAN /
Network. Trouble is neither machine can see each other so i cant share
files or printer etc.. Firewall is off , sharing is on , also ping the
router (that works) ping'd each machine and im getting request timed
out. All machines have individual IP adds , able to ping the router.

Can anyone assist or possibly offer some tips / direction . Ive heard
this is possibly a prob with router as other people have been having
problems with this too.

Thanks