Little or no connectivity

Hello,

Completed full reset of lynksys Wireless G router, downloaded software , my Dell sees wireless G router but says I have low or no connectivity butthe signal is at full strength. I connect the router directly to my laptop with a network cable. I went to iexporer and typed in 192.168.1.1. The computer thinks for a bit and looks for proxy settings and then comes back that a connect could not be made. Need help!