Well, try it out yourself. If you get stuck or lost, or whatever, just PM or e-mail me and I'll help out.
...why print screen? Couldn't you just right-click on the image and go to "save image as..."?
Edit: Oh yeah, I'm actually considering going through my DVDs and finding other neat scenes to screencap and convert to avatars. Then submit a crapload to the site...should I? (BTW, I'm the one that submitted the "TMNT undercover" avatar that oldmanwinters and whitewolf89 is using
)