Welcome to PC guys!! Don't worry about being new and all, we were all new at some point. You should all make friends fast. There are plenty of people here to meet so just give it some time to gather a big group of buddies. Also, you've always got a friend right here. If you guys have any questions or anything, let me know and I can try to help. XD
Sandslashman: I suggest opening up an account on Photobucket.com . Photobucket is a great image hoster that you can upload pictures to and then use the code to post images in your signature or in posts, or anywhere on the internet for that matter. When you make the account, just upload the picture, copy the IMG code into your signature, and it should pop right up!! XD