By far the easiest way is to install dropbox clients on your mobile and PC. You can set the mobile to upload photos to dropbox as soon as they are taken (although you might want to set it to wait 'til you are in range of a wifi hotspot).
The PC client syncs the photos to its hard drive when next switched on.
If you know someone already using dropbox, get them to refer you. That way, you both get a bit of extra space (I think 250MB)