2 things, First off a reason that nobody's responded to your post is that you posted at midnight. It's a Friday, many of the people on these forums work a pretty standard 9-5 job, and aren't browsing the forums between the hours of 10pm~11pm to 5pm. Secondly, the phenom's were not an overly popular processor on these forums simply because of the c2d's and i5/i7's, and there are only a handful of phenom users that I can recall, so naturally most people aren't able to just whip out an answer for you, and it would require some research. We are a help forum, not an instant answer service.
I'll give you an answer to the best of my ability. The upgrade from 2gb to 4gb of ram will be noticeable, so I would do that. The vram on the GPU won't make a big difference at your resolution, if you were running a 30" I would recommend more vram, but also a faster GPU. The motherboard might give you a performance increase upgrading the FSB speed, but I'm not 100% sure about it. I'm sure a quick google search would give you a rough idea if you'll see any performance increase, but at the same time older ASRock boards aren't known for their quality, so I would steer away from that board in particular.