I just realized I have windows movie maker will that help?
You could drag the vob files from your dvd's Video_TS folder onto your hard drive then change the file ending from .vob to .mpg This sometimes works, then use windows movie maker2 to edit.
If the filetype end change doesn't work for you try using the free vob to mpeg converter and then try editing the mpeg's in windows movie maker.
http://www.videohelp.com/tools/VOB2MPG