Or never took advantage of free painting programs for some odd reason:

http://www.pixlr.com/app/

It not bad for an online flash application. Although the resize function is not as great in quality compared to Photoshop and such, it's good enough for a quick resize. Because I'm not particularly fond of waiting to load extremely large images (ie: 1200x1200 and beyond ) in the artwork section, and having it auto-resized (by the forums) to something I can't recognize.