Windows 7 Wireless Connection Problems? -

I m beta testing Windows 7 on my laptop and I ve been having some problems connecting to my Wireless Internet on it. I can on all my other computers but not my laptop. I ve looked around on forums and I got an instruction to use my IP/Domain and then username like this: 171.1.13.39\19252WIRE That hasn t worked yet so I m asking for help on here. Any suggestions?

may i ask what kind of a laptop you have ?i know alot dont like dell id go dell anyday .the reason being i have the most awesome tech you can get with dell he knows his stuff let me know hope some one can help you if it isnt a dell