I have been trying to use my MDA PRO to send a fax.

From the PDA no joy.

From an IBM thinkpad via USB, to MDA PRO as modem no joy.
via IRDA no joy.

What hassle. This is meant to be a Universal perhaps a Nokia 9300 would have been better.

Anyone know how to get this to work.

I read this on the KSE web site, http://www.ksesoftware.com/

HTC-Universal device without fax software - The already available "Universal" devices manufactured by HTC are not equipped with a fax software. That means, when you purchase one of these Pocket PC Phones, such as MDA Pro, XDA expert, VPA 4, etc. no version of our software KSE Truefax is included. Furthermore no version of our software is available for these devices. Previous versions of Truefax are not compatible with this device type. If you need a fax software please contact your respective net provider.