I'm trying to connect my compaq presario v3000 laptop running xp, to the wireless routing function of the linksys router. I receive my internet from the cable company and it works when i connect directly to the cable box and when i use the wired function of the router. But when i try to connect wirelessly i get the authentication problem. I have tried both security setting and no security. I reset the router for each test. Normally i can connect to any unsecured wireless signal no problem.