You can connect your phone to the PC is such a way that your PC sees as a drive.
- Disconnect the usb
- Setting -> Application -> Development -> USB Debugging
- Connect the USB
- Pull down notification bar -> USB Connect
Have fun. This is how I transfer all my albums and videos (> 20 Gb) to my phone memory and SDCard
PS. the debugging flag itself does not harm anything in normal usage, you can leave it on.
Only during the session that it is really 'connected', you cannot access these directories from your phone. They are used exclusively by your pc.