Paintin' Rims

I have an '93 altima and it still has it's aluminum production rims. They're good rims but they've developed some calcium deposits and are in bad condition right now. I want to make them shiny and clean again but i don't know how to go about doing it. I've heard a little about Powder Coating but it's kind of expensive and i'd like to know whether you can powder coat your rims a certain color. If anyone has any advice, i'd appreciate it. Thanks

I found out how to paint your rims from this website:

http://www.scoobymods.com/forums/showthread.php?s=&threadid=1918

It looks like his method does a pretty good job.