Just an update (and a small review).
I bought the Encore PCI wireless adapter that was suggested by l33t-g4m3r.http://www.newegg.com/Product/Product.a ... 6833180052
It was $24.99 and a few dollars for shipping. Of course Newegg had it to me in 2 days.
Installation was simple and took less than 5 minutes.
Used the enclosed CD to load the driver, and I was connected to the internet in just a few short minutes, and it's WPA2 encrypted.
So far the speed seems just as fast as it was when it was hard wired to the router.
I couldn't be more pleased with the whole experience.
Great advice here. Great service from Newegg. Great performance from the product.
Thanks to everyone.