WMP12 box at video play huge!

Okay so when I first started using WMP12 to play vids a little box would appear as it cached the vid for playback later. This was fine. But I let a friend use the computer and somehow he resized this little box before the video launched and now it it huge! This bothers me to no end causeing many a rage at the fact that I cannot resize it back to what it was before! Is there anyway to resize it back to the small little thing it was before!?

Please help quickly as my OCD makes me HAVE to fix this! I almost want to cry!

Perhaps I can somehow return WMP12 to the default settings. I do not care what I need to do to fix it, I just want it done! I'll gladly hack the register if you think that will help--just point me to the keys!

BTW: I already turned the feature off and back on and it didn't work!

Open WMP, press the Alt key to get 'file, view, play' ... etc.
Click on 'view' then Video size ... what is check marked and at what percent?