You should try out the newest version, it's mostly on par with photoshop, which is impressive in itself for FOSS. They pretty much overhauled the entire interface to match the single-window workflow, although it's not enabled by default for some reason.
I might give it a go, although I'm pretty sure CS5 is beyond my budget (haven't looked yet though).
Ohhh "free" But yeh makes sense. Maybe someday it will get such a big hobby that you are going to get it lol. I thought about it myself actually, i would like to get into that^^ But well, your Rainmeter Solution looks really good tho