After spending some time on the net I finaly decided to go for a "online" transformation of my Windows XP Corp and OEM to a VLK (Volume License Key) one.
The only way I knew was to go with a repair of the installed version with a Corp VLK edition … takes time and you have to redownload all the fixes …
So tried to change few stuff and change the cd key … and it works ;-)
Now I'm free of the M$ WGA (already installed on one PC by mistake) and it doesn't annoy me anymore …
Follow the instruction in the howto.txt
Source: albert00 … lol
Worth having: cFosSpeed - Speed your internet connection!
For this one I'm asking to wait 24h before posting mirrors please …