Since it looks like your camcorder does not have a DV (iLink) port, you can only transfer to computer via analog, monaural, AV port. The cable is at the bottom of page 11. Step 1 is get the cable - from Sony.
Since your computer probably does not have analog AV in, you will need to get an analog/digital bridge.
I will venture to guess you have only USB on your computer and no Firewire port... this can use USB:
Generally speaking, however, video transfer works best over firewire and adding a port may be easy (and cheap). If so, or if you already have a firewire port, then http://canopus.com/products/videoconversion.php
would be a useful choice.