I don't know about the temps but I can help you with the photo
If you only want to use "Paint" you can select "save as" then switch it to 256 color Bitmap.
If you download Picasa2 (free) http://picasa.google.com/index.html
You can tweak the color, brightness and whatnot of the picture. This will lower the quality of the picture Make sure you "save a copy" Even though it looks better it will be less quality,Then when you upload it to your photobucket account, it will shrink it less.
You can also download "IrfanView32" (free)http://www.freewarefiles.com/program...&ProgramID=292
and change you picture size to whatever photobuckets size requirements are then photobucket won't have to shrink your picture.
"Picasa2" will give better results comped to "Paint shop" I have never used IrfanView32 for photobucket but I think it would work the best.