I was on with tech support for 5 hours, apperently no one has done this before with a Axim x51......
First bluetooth pair the phone to the axim, then pair the axim to the phone
Then goto Start > settings > Connection tab > Connections
Click add a new modem connection
Name it whatever i used "Tmobile GPRS"
Select Bluetooth as the modem
Next
Select your Bluetooth paired phone on the list
next
enter the following for the number to dial:
*99#
next
leave user, password and domain blank but check the box that says remeber password
click advanced
change baud rate to 19200
uncheck the box that reads wait for dialtone
enter the following into the modem string command box axactly as you read it:
+cgdcont=1,,"internet2.voicestream.com"
click OK
click finish
now go to "manage existing connections"
select your newly made connection
click ok
Now when you open IE or outlook it will say connecting to bluetooth modem
MAKE SURE : bluetooth is ON, both on the axim and the phone, i leave mine running all the time..........
I get about 192kbs not to bad for totally wireless internet wherever you go