your computer or laptop needs to have BT. You can get an adapter (sometimes called a dongle) at Fry's for 10$ (at least this weekend in Austin). I'm using the widcomm update so I have to start the sync on the axim, but otherwise works fine.
There is an excellent tutorial on Bt that has a section on sync'ing with your computer.
For me, it has worked flawless all the time. (knock on wood)
