before I screw something up question ( dual channel ram)

I am running two sticks of 512 megs each dual channel on an Intel 865 Perl mobo. Being a bit dumb I recently bought a new to me 256 meg 9800XT video card. It has a humongous heat sink top and bottom and won't fit in with the ram where it is. I tried it on my msi mobo, no go and I can't move the ram on that one as my last ram slot is cooked. The Intel board I want to try it on has A0 A1, B0 B1 in that order. I have the ram right now in A0 and B0 to run in dual channel and all is running well. I am wondering if I can move the ram to A1 and B1 with no trouble. I thought I would ask before I start pulling the machine apart since it is working perfectly at the moment, if there is no great chance of this working well then I really don't want to fritz around with it. This is the only way though I could even possibly get this thing to fit in here, and even then I am not sure.
Thank you all very much in advance.