Hiya,
If you mean you are sure you know exact files to save then yes it's that simple
I use a reg edit i found years ago, it adds copy to and move to onto the right mouse click options (best way i can describe it), it works fine in xp and vista in all flavours (eg: x86 and x64) Guess i can add a link if needed
Simply put usb in and wait for it to be found, then either drag n drop the highlighted files etc to that usb device or use copy to or move to etc if you have it installed
If i'm reading the post wrong and you're wanting to know which exact files you need to copy across then i dunno for sure
I also use another eg script that adds open with, this and the copy/move to i add asap i've done a fresh os install as they make life a lot easier
Hope my waffle makes sense lol
Have Fun
Tony
ps: with me always using the copy to move to reg script i assume (bad i know) that the drag n drop option still leaves the orig files in place (as i say i've used the script for so many years i cannot rem using any other option)