The easiest way is to attach an RF cable from the SKY+ 'location 2' outlet and feed it to a TV capture card on your PC. One that has record capabilities in the software obviously. All programs will have to be copied across in real time. So a 2 hour program will take 2 hours to copy across. There are quite a fewMPEG editors out there that will let you edit the resulting file and cut out ads etc.
You will need to go into SERVICES then press a combination of buttons to launch the installer menu and activate the "power" on the RF sockets. If you decide to go this way I'll post the buttons later.
You could, I assume, use a SCART to AV box, then S-Video out to PC if you capture device has S-Video for a better quality picture, but bear in mind that the easiest way to get signals to another room is via a cable. You CAN use a wireless sender unit too, as long as your capture card has an input for the output of the sender.
Alternatively, although not ideal, ASDA are doing a cheap and cheerful DVD+RW recorder for £68 these days. Does the job for quick backups, but editing the VOB (dvd) files is a bit trickier.