No probs, just find an av you like - make sure its 100x100 or post it and I'll resize it for ya, save it to your documents, go to User CP up on your left there, click Edit Avatar, browse till you find the avatar then upload!!

Voila

Post pics by clicking manage attachments when you are posting a reply, browse, upload and submit and thats you!
Good luck, I look forward to seeing your pics, photos are cool, more people should post them!!