Hello, I saw your sig picture in a thread and had a question for you. Is the other phone in the picture the Audiovox SMT 5600? If so, do you have both the Audiovox and Treo running on Cingular? I ask this because I also have the Audiovox SMT 5600 and recently purchased the Treo 650 and the Cingular rep told me that the Audiovox was on ATT only and I wouldn't be able to switch the SIM card between the phones. Then only reason I'm interested in doing this is becuase I live in Seattle and boating season is upon us and I'd rather have the Audiovox out on the lake than the Treo just in case something happened. Thanks in advance for any feedback you are able to provide.