Theres a few free DVD rippers that will rip your DVD's to .avi or mpeg .Do you want to do this for editing purposes ?? .As there is some software that will edit .vobs too .Just copy the contents of the disk to your hard drive , open up the program , Video-Redo will do this [it's not free through, but saves a lot of time ] import your .vob file and edit and save as .avi or .mpeg .I think Womble edits .vobs too . HTH