Need Computer help...

I agree with Bigloo on getting a solid G router any of the major Vendor will be just fine. Netgear, Linksys, if you want to drop the coin and do a little work pick up a Cisco It is the best.

The 54MBits is a shared Theoretical Bus speed Depending on interference and distance the 54Mbits/s will never happen and its shared between all the PC/Devices. Because of the shared bus and speed of the wireless, If i can hardwire I do hardwire.