Apple Airport Trouble with Belkin Card in PC

[ASPeterson]

Please provide some creative help. Our Apple Airport router has worked great for over a year tied into the Motorola cable modem provided by Time Warner. However, during a storm everything went offline. I followed directions to reset the Motorola and the Airport (took 2 days to figure out letting it sit for a while to fully "repair"--thanks online forums for that tip) and now my daughters who have MacBooks are connecting just fine as is my husband's PC! However, I cannot get my Dell laptop with Belkin wireless card to connect wirelessly. I've exhausted every resource I know including using RoadRunners (Time Warner's) medic to renew an IP address and disable and re-enable the wireless card. System checks tell me the wireless card is working fine, I am getting a strong wireless signal on my laptop, everyone else is connected, but I'm dead in the water unless I have this crazy ethernet cord strung across my family room directly connected to the Airport. Does anyone have any ideas about a setting I'm failing to correct (or might have messed up during this process) that could be holding me up. The week without wireless has been painful!!

[Satcomer]

Does your Airport Extreme have security on it? If so what version of security (WEP, WPA, etc.) is it set for? Lastly is this a N capable Airport Extreme? If so does the PC use the N wireless or just the G or B wireless?

[ASPeterson]

It does have security and I have entered the correct security code in every place possible.
I honestly do not know the answer to your questions about the "letters" -- all I know is that this was working just fine with no issues for well over a year. I am experiencing a myriad of other problems with the laptop based on what I perceive is a script issue received from an Adobe Acrobat update download a while back (more research enlightened me on that since I keep getting the same error message) and am also receiving regular messages about lack of virtual memory. Bottom line, I think the laptop is on it's way out so I'm now using an older one of my husband's. Just a pain to transfer all those accumulated files--thank goodness for a large external hard drive for backup!
Thanks for trying to help.