Problem with WEP newbie needs help

I attempted to turn on 64 and 128 encryption WEP today.
My connection dropped from 1.2m to 100 - 300 k.

I am using a Belkin USB adapter and Belkin router.

Os is win xp pro.

Anyone have any suggestions or helps?

Thanks in advance

Hemlock

Not to sound like a jerk, but exchange that POS for something better.
Belkin in my opinon is junk. They give nothing but problems.