"I switched 2 years back. Much happier now. I only miss paint"
It's been so long since I used MSPAINT that I really don't recall what it can and can't do. I use the kolourpaint program (part of KDE) for simple image editing. For that matter, I think MSPAINT will probably run under WINE, but my experience with WINE has never been very positive -- not really a criticism of WINE. WINE seems a noble attempt to create a Windows compatible environment on Unix, but that's really a monumentally difficult task I think. I vaguely think that ImageMagick has some editing tools. And of course, there's always Gimp. Rumor has it that Gimp's once legendarily baffling UI has mellowed in recent years.