changing hwsetup for multiple graphics cards

has someone ever done this?
i have a prosavage and a chips69000 card on one board and the primary card depends on the bios setting
the problem is that hwsetup always uses the vesa (prosavage <edit>don't ask me why the vesa driver is used and not the savage but i figured that the savage driver doesn't work anyway when i tried to load it manually so i guess that 'll be alright</edit>) driver and that gives me a blank screen on the 69000 in any resolution greater than 640x480

now i somehow need to hack hwsetup (actually i was hoping someone had already done so and could save me this jop) to assign the right driver to the right video card, any suggestions?