OOOH! I am just the person who thinks in this illegal way. There are lots of DVD rippers out there, many for free. And no, it is not illegal to have a copy of this software. If it is made so that you can have backups or different videos on your computer of DVDs you already have, it is perfectly legal. Anyway, you can use CloneDVD, by slysoft.
http://www.slysoft.com/en/clonedvd.html is the web page, so go ahead. You can download a 30 day trial version. No restrictions. The full program for 30 days. You can be illegal, however, and actually download a patcher that "registers" your copy for free... he he. Not that I would know. I hope this helps! If you need another program, just ask. There are plenty of them.
Edit: Just joking. I didn't see his post above...
"You're only supposed to blow the bloody doors off!" Anyone who recognizes this quote is awsome.