There are several ways, I will list them in order effort required:
1a. Using a tv card on a computer and a composite or s-video out on the camera, capture video from a camcorder then follow step 1c.
1b. Using a firewire socket on the computer and camcorder capture video.
1c. (1b is preferred to 1a). Use video editing software to edit your video, e.g. trimming clips, adding music and transitions, special effects, disc menus etc and burn a dvd or create a file or something. There is free, basic software like windows movie maker or you can get better software like Pinnacle Studio or Adobe Premiere Elements.
1d. A lot of this software allows you to go from capture to dvd without really doing any editing at all. I think Nero disc burning software lets you do this.
2. Use a small device you attach to the camcorder and it will transfer the entire contents of the tape and burn onto a DVD. Virtually no control over the process except to turn it on.
2b. You can get a VCR style DVD recorder which sits under your TV and you control it using a remote. Can do basic editing and disc menus. Can use it to record your ordinary TV viewing too and maybe transferring stuff from your PVR (like a freeview PVR or Sky+/V+) onto DVD for longer term keeping.
I recommend 2b over 2a and 1b over 1a. The only other consideration is the power of your computer as video editing is pretty intensive. Therefore on balance, I would recommend 2b.