network configuration problem

hello,

I have two desktop pc and a laptop all running Windows XP, I now bought a Dlink DI-624 wireless router and managed to network all computers to share my internet files and printer. Every computer can see any other, the problem comes when I restart since desktop (wired) continue to share between each other but are unable to see the wireless laptop. I am suspecting that networking services are not reanabled when restarted although I can still use the internet when I restart, any help please.

 

problem solved...........the firewall on the laptop was causing the problem I chaged some settings and am running again.