There was a program I was introduced to, here actually, years ago that let you play d20 games online very easily.
It had a nice grid you could scribble on and let you roll dice in a chat etc etc.
It wasn't much more then that but I have no idea of the name and searching things like D&D or D20 online isn't really working all that well.
Posts
is openrpg what you're thinking of?
It was even simpler then all these. But it was still quite nice.
Seriously, dragging and dropping token icons from any picture is the biggest feature. I've tried about a dozen different online mapping/whiteboard programs and everything else pales in comparison to Maptools.
http://gametable.galactanet.com/
It's what my friends' online games use.