1. Make an iso-image of the DVD.
2. Copy that image to your USB-stick.
3. Load that image as a virtual drive.
4. Play with your favorite player from that virtual drive.
Software you'll need:
a. A program to make an iso-file of a DVD.
b. A program to load an iso-file as a virtual drive.
c. A program that can play DVD's.
If nobody else comes with an even easier recommendation, I'll provide some links to programs for a and b tomorrow. Unless, of course, you reply that you already have such programs.
There's one issue, though: a 4.7 GB DVD won't fit on a FAT32 formatted USB-stick. So you'll have to use a NTFS formatted stick. Or find a way to transfer the file to the harddisk of your netbook (via an Ethernet connection or an external hard disk).
I have a netbook that I would like to watch movies on. I wonder if it's possible to do so if I copy the original files from the DVD to the flash memory. I have a lot of movies and travel much and bring my netbook. Can I watch them through the flash or do I need an external DVD reader?