Hi folks, I bought a Treo 800w from Sprint which use Windows mobile 6.1 OS to replace my Treo 700W which use Windows Mobile 5 OS. and I wanna use its internet on my Mac Book Leopard since both the Treo and Mac Book have bluetooth. And it can help me a lot when I am out. I could do it on my Treo 700w which uses Windows Mobile 5 OS. I used it for a few months. But when I tried to connect Treo 800w from Mac OS, it connected, but the Internet couldn't get through. Then I installed XP on Mac Book through bootcamp, and I successfully connected Treo 800w with XP in my Mac Book(I downloaded and installed fix patch to enable the Internet Sharing on my Treo 800W) and use Treo as modem in the airport and other places. It's so cool!! The reason is both the OS are Windows. So I wanna figure it out how to set up a through Internet sharing between Treo 800w and Mac book. Here are what I did, please check if I did wrong. 1. Connect Treo with Macbook through bluetooth. 2. Go to "Network" in Mac, add a "Bluetooth PAN", and the parameters are as below: configuration: Default Telephone:#777 Account Name:firstname.lastname@example.org Password:xxxxxxxxx 3. Click "Apply", then click "Connect". 4. Then an error came out and says, "Internet Connect: Could not open the communication device." What does it mean? I also installed Parallels 3.0.544, hoping it can provide bluetooth connection with Treo, but it's only a virtual machine and can't provide bluethooth device. So my question is: 1. What I should do to connect Treo 800w or any Windows Mobile OS 6.1 phone directly with Mac OS? Any suggestion? I already remove XP, since it costs too much power and need reboot everytime. 2. If Treo can't do this, which phone(except iphone) can share Internet sharing with Mac Book? Thanks so much folks for your help!