Having trouble connecting Acer laptop to wireless rouder

My laptop can connect fine to my wireless rouder (which is the one the comes with verizon fios). It connects for about two minutes though, and then i get a message that says “limited connection” and it eventually disconnects. Because of this, i have to reconnect every 2 minutes and it is extremely aggravating. I know it is not a problem with the rouder because my xbox360 and my brother’s laptop are connected to it and work fine. I run windows vista and cannot figure out the problem. I was on the phone with a tech support guy for an hour last night and he couldn’t help. Any suggestions?

What Acer lappy? I have the Aspire 5315 running Vista and had to update the wireless Network Adapter driver, when I was having connection issues… Might be worth a try…