[Alug] Dual head displays

Hi Folks I'm back after some months of absence (been else where on other projects). I now have XFree86-4.10 and KDE2.2 installed on a spare 40Gig drive (I know, it's only a baby), and am trying to get a dual head display running. The graphics card has two GD5462 chips on board, but I'll be b***red if I can work out how to get both of them to work. Has anyone succeeded in running a dual display, and if so, do you have any pointers ? Regards, Paul.