Just getting up and running on DVD burning, etc., and know that I need more space. I have an 80gig in my Dell 4600, but my case won't hold another drive.

I'm thinking of 120 or larger for a second drive. My (dumb)questions are:

1. Should I buy a regular drive and put in a firewire enclosure?
2. What size and brand would be best? I'm familiar with several, but need advice.
3. I see some are sold as a package with the drive and enclosure, but want to do it right.
4. I believe for proper dvd burning you need a second drive or at least 100 gigs to spare.(please correct me if I am wrong)

Advice very much appreciated. Thanks!!