Htc G1

Ok, so I decided to buy the new HTC G1 phone from T Mobile and release and put my att sim card in. I've heard that I can not use 3G phone with ATT, but I do have unlimited data, I never use the Internet, so im not disappointed about it. My question is, will I still be able to use the AIM messenger, and send photos and videos?

Depends on many things. First ATT will prevail parameters. to send the G1 to operate on their network. Depends also if the ATT network requires that you use the web to AIM.

Sometimes it can help you
http://bestnewphones.blogspot.com