You know... just because he did post this in the wrong section doesn't mean you can't answer his question. >.>
And to be nice and answer your question, if you drew it on paper, you must scan the picture and then upload it onto a host site like
http://www.photobucket.com or
http://www.imageshack.com.
If you drew a picture on your computer, just upload it onto a host site. ;D
That's only if you want to post it on the forums. If you want to post it on the main site, look through the questions, because it has all ready been asked.