Rich, your speed is very fast.
If you think your computer is slow, check the computer itself first. The next thing to think about is getting a wireless access point that is set up for N ONLY, no ABG, just N. That will give you the fastest speed. Do not use G/N as it slows down to G speeds.
Thanks Josh. Do you think one of these cheap upgrade devices will work?
http://www.outletpc.com/um3746.html?gclid=CKX-6OvRnK8CFQhN4Aod6C3kbw
Anything in particular that you recommend?