Are you sure Dell did not replace the video card due to some issue and they actually gave you a replacement video card with only 32mb ??? My Compaq X1000 model came with either 32mb or 64mb (separate chip on video card) so it sounds likely you got a replacment video card with the lower memory chip.
Call Dell and confirm what they did when the repairs were done on your notebook.
I have a dell 600m with a mobility radeon 9000 which should have 64 MB of Memory. After I got the Computer back from dell suppport, I found that the computer could not stay at the maxium resolution. I updated to a newer driver which fixed the resolution problem but games still seem to run at a lower frame rate, and Maya is always lagging up. I checked in the Radeon options and it says the memory size is 32 MB.
I know I had a 64 MB card, so I was woundering if there was a way to make the computer relized that there is an extra 32 MB of memroy on the GC
Mobility Radeo 9000
512 MB of RAM