I found the GUIminer to be pretty straightforward, and if it's based on poclbm and works now at that mhash-rate, I think I will stick to that for a while and play around with it.

At the moment I'm trying to figure out what settings I could use to have the mining running in background at lets say 50% of what the gfx card could run at, so I can let it run with low fan speed and low temperature during the night (I sleep in the same room, so a loud fan would be a major downside, lol).