Tom Tom 5 on Xda Orbit

[Cairnstone]

I have just acquired an Xda Orbit from O2. Having installed Tom Tom 5 I find that no device code is shown in the Tom Tom version information, so I can't reset my Tom Tom account to allow me to use my Tom Tom traffic account. Is there a 'standard' device code of some sort that I can use until such as time as Tom Tom will support the Orbit?