Hey Ping Man,
You can either buy a Bluetooth USB dongle to transfer files to and from you pc (just like transferring files to another phone) or you could buy a usb cable. If you have a PSP or a Sony / samsung digital Camera, then the USB for them will fit your Motorola.
With the usb cable option you will have to 'aquire' Motorola Phone Tools software, or use the slightly more tricky way of browsing the files on your phone using windows explorer.
Oh and If you use the Bluetooth dongle, it takes a while to transfer files.
Hope this helps,
Dnz