using my Treo 750v as a modem for my Dell Axim...

[ir803]

I need to send Hi-res images to clients via email or FTP, I used to use a nokia 6680 3G phone with my laptop and axim, When I got my Treo 750v about a month ago I spent a day searching for the correct driver so I could use it as a 3G modem for my MAC Ibook, now it works perfectly....but I also need to use my Dell Axim X50V and it connects to my Treo via bluetooth but then will not connect to the internet or an FTP client, the connection always fails, I am using the same connection settings as my Ibook and as I did for my old Nokia but do I need to somehow get a driver for my Axim for it to work ??
Any Ideas would be greatly appreciated.