Second the recommendation for ImgBurn.
Here are some guides to using it: http://forum.imgburn.com/index.php?showforum=4
By the way, DVDShrink is outdated as a ripping/decryption program for many newer movies. If you run into one that gives you trouble, try DVDFab HD Decrypter, which is the free section of DVDFab. Found here: http://www.dvdfab.com/free.htm
It will continue to function even after the trial for the main part of DVDFab expires. To use it with Shrink, rip the dvd to the hard drive as files, then open the files with Shrink to compress.