I can see you've made up your mind that the problem involves Windows using a previous WEP key, hidden somewhere, and thus using it to keep you from connecting using a different key. The problem likely is something entirely different.
Biggles Chocks Away Ginger Premium join:2003-04-16 sweden
You may well be right, SoonerAls command line solution looked good, but back to square one after reboot. Its now working, time to stop fixing it. Again, thanks for the input