so there are two things that need to have bluetooth, your comp and your phone.
your phone either comes with bluetooth or not, and according to
http://www.mobiledia.com/phones/samsung/sph-m300.html it does. so that's the hard part !
your comp will also need to be able to use bluetooth, if you buy a bluetooth dongle [
http://buynow4cheap.com/catalog/images/Bluetooth-Dongle-BTU-001-Support-Vista.jpg] then you can have bluetooth acess.
simply turn on the bluetooth for your phone and your computer and use your phone to search for a bluetooth device and your computer should show up! sometimes you need to put in a code 0000 works and then they will be hooked up
after being hooked up from your computer, i believe it's in the my computer folder that you can see your phone, then just drag files over ^^