Originally posted by salparadise
everything installs and i thats the last I see of my desktop till I've reinstalled everything again
I think this gives the game away! If you read the instructions carefully, it states that you need to quit X before installing the drivers. In Mandy, what I would do is open up a terminal and type init 3
to close X completely (some would suggest <ctrl><alt><backspace>, but that serves only to restart the X server in Mandy) and from there try installing the drivers.