No I suppose I have no need for Toast. I thought I needed that for the process. So if I only want to put it on my hard drive I only need MacTheRipper?
If you only want to copy the DVD to your HD, then you can use MTR.
However, as was mentioned above, each DVD copy will take up the space that the DVD takes.
There are two types of common DVD sizes; DVD5 and DVD9. A DVD5 will hold around 4.3GB of information. A DVD9 will hold around 8.5GB of information. A DVD9 is also known as a dual layer DVD.
The majority of DVDs released today, are DVD9s. So 100 movies would take about 800GBs of space on your HD.
If you want to make a backup of a DVD, which is what I do when I am traveling so I don't hurt/damage my original DVD, is to do the first process that I mentioned above.
You will need Toast, or some other software, to burn a playable DVD.
Is there a way to shrink the 8GB to a smaller size without sacrificing quality?
The way to maintain the best quality is to burn your DVD to a DVD9.
However, DVD9s cost a lot more than DVD5s. So if you want to shrink your material to a size that will fit on a DVD5, one program that you can use is DVD2OneX which does a good job of maintaining the quality of the video. It will sacrifice the quality of the menus and other non movie DVD material.
Another way to shrink content is to use Handbrake which can convert the DVD files into a mp4 or other file of various quality, for example use on the iPhone/touch platform. These files will take up much less space on your HD. However, they cannot be burnt to make a DVD that can play in a DVD player.
So it all depends on what your goad is, be it to make backup copies of your DVDs, to store DVD content on your HD or to convert DVD files to another file format such as mp4 or avi.
I also have a HDMI to DVI(?) cable. Will I then be able to hook up to my TV and play the movie on my HDTV?
Since you have the cable, the TV, and the computer, why not give it a shot to see if it works?