See if this helps - its meant for an IPAQ, but it should be OK for an Axim also ...
http://www.geekzone.co.nz/content.asp?contentid=1421
These guys also have good info on many other things bluetooth, including activesync over BT here:
http://www.geekzone.co.nz/content.asp?contentid=1423
Let use know how it goes .....