Yes, VM can help, but 2 gig should be ok, so long as you are not using any other programs at the same time, I wouldn't tab in and out of EWoM to surf the nets, and I would go no where near photoshop.
Saved and custom files would be a simply copy and past, but make sure you are up-to-date before you do this, and after. Your EWoM CD key is linked to your impulse account, you can install impulse on any number of computers, so no issues will a rise their. Star-dock believe in allowing us poor gamers some freedom to use the actual programs we have paid for!
See points Eight and Nine in the gamers bill of rights that Star dock set up.
http://www.gamersbillofrights.org/