In case you still haven't tried it, I have no problem running DC off my laptop with a gig of RAM and a ATI mobility radeon 9200 (32MB video RAM). I had recently turned off luclin models to see if it made much of a difference and I'm not noticing it. The only problem would be the playing 2 characters on the same accounts. I haven't done it, but from what I've read in the forums, you may crash a bit when zoning if you both zone at the same time.