i'm trying to make this pixel, but i want it so that the white area around it is transparent. so for example, if you posted the image on a site and the background color on the site was black, it wouldn't be white around the image. how do i do this in ms paint?

i dont think that its possible.. but i'm not 100% sure.

[ http://www.createblog.com/tutorials/download.php?id=89 ]

is it possible to do it with only paint?

Nope. Which is why I directed you there, since that's the next best thing.
Of course, you could have the illusion that it was transparent. It wouldn't be truly transparent tho.

yeah, it's impossible to make an ms paint creation transparent. Sorry to say.