http://www.cdrbase.com/forumdisplay.php?forumid=117
CM's Tutorials - all is explained.
Seriously though, in transferring a DVD to CD, you have several choices.
What format? - DivX/Xvid is generally best for compression (= fewer CD's or better quality)
But if you want to play it in a DVD player, you'll have to choose SVCD or VCD.
Standard VCD is 1:1 CD capacity to programme - so a 74min CD will hold approximately the same in video.
SVCD can offer excellent quality at 2:1 - but you'll only get 36 minutes on there, or better quality than VCD at the same utilization - and fit more in, with degrading quality.
Take a look at the price of a DVD writer though - the price of older 2x models is slipping down - I paid more than that for my first writer, and I wasn't an early adopter!!!!