I went to the ifskinzone and downloaded some buttons, but when I'm in my admin CP and go to images, I don't see any place where I can upload them. There are [IMG] things but nowhere to upload the buttons. This is prolly a noobie question, but plz help me out.

You have to go to an uploading website like
www.sixpop.com
www.imageshack.us

goto photobucket.com or tinypic.com

You want to upload the images to a host like stated above. Then if you uploaded via ImageShack.us you want to take the very last URL that is given then go to the Admin CP. Once there you need to go to Images, find the specific spot for the image you want to add, take out the current URL there and replace it with the one you got from ImageShack or any other Image Host.