Too much effor when I have IrFanView right on my desktop. 
irfan view is good.
I made him download it.
IrfanView is a highly-recommended image reformatter. 
you made him download it? Wow, you must be real scary.
I find a person whos avatar is a very un-violent looking Samus with a santa hat on and a red bow around her neck HIGHLY un-scary.
You ignore the arm cannon. Looks can be deceiving. 
Regardless, that really has nothing to do with the topic. <.<
Quite.
Hm…I didn’t think an image reformatter could make colors transparent, but I suppose that makes sense. Although I doubt I would find much use for it, since I already have thirty thousand reformatters. That, and I have no idea what the name means.
as far as actual tricks for MS paint… I don’t have much. Although… if you want something to look like a computer screen, or hologram… thing with multiple open ‘windows’, the rectangle with curved edges tool is a quick (and easy, and it looks pretty good if you do it right) way to get the look you want. One tip for it: Don’t try to do it in an organized fashion. Do it more randomly. Just click, drag, click, drag, etc, etc, etc.
And I’m sure alot of people won’t find the right way to do it, won’t ever use this, and will deny it when I say it CAN work rather well.
Tip: Mess around with the curve tool. It’s addicting.
…yeah.