cannot see games across network help me please

hi.

ok i recently got new everything..2 desktops...1 laptop...1 wireless router.

now ive done this plenty of times and never had a problem.
this time however i went to create a LAN game and the computers couldnt see each other. one would host the other couldnt see it.

now everything else works, internet, file sharing, everything except this.

i beleive the laptop works however because it was already done when i got it.. but cant test it because other computer dont work

and it does this for every single game. unreal 2004 battlefield warcraft 3...etc.

everquest 2 works tho..its only games on the lan.

ive called the router company and the guy was a idiot, only thing we tried i hadnt done before was dmz which didnt work.

i think its the copys of win xp pro..i got them from work and there by dell..

computers are service pack 2..windows xp pro..the two desktops are wired straight into the router and the laptop it wireless.

if anyone can help me please post..
sonicbit8

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