[Newbie]Upgrading to 4.2.0 WITHOUT losing my existing desktop etc.

[Tom Bednarchuk]

Hi all. Anybody have any tips on doing this. I tried to upgrade my RH 7.2 box so that I can use the updated ATI drivers and try and get some hardware accel for MPEG playback but I just succeeded in screwing up the system. So I have reinstalled and now want to try again but I don't want to blow it this time. Obviously I said Y instead of N to a question in the installer that caused this.   So, has anybody done this successfully? If so, how ?   Tom