moving an installed game without actually reinstalling it

Ok i have a problem. I have a game that doesn't really exist anymore (Star
Wars Battlefront II 1.0 edition - which is outdated and doesn't exist) and i
was stupid enough to loan my discs to someone who (just my luck) lost them.
Now my computer is being a jack-off and it's running extremely slow (tried
defragmenting the hard drive, cleaning out excess files, uninstalling several
other programs etc.) I'm thinking it may have some sort of virus because
somehow my Norton AntiVirus software mysteriously dissapeared (don't ask) >=(
Anyway, I can't get it to run any faster so now I'm going to have to resort
to wiping the hard drive clean, which is a problem because I donn't have the
game discs and can't reinstall (obviously). I want to keep the game but I
can't do that and wipe the hard drive (without doing the partition thingy) so
I've come up with this:
1. Put all of the game's files from program files into a folder and send it
via network to another computer
2. Wipe the first computer's hard drive
3. Send the folder back to the first computer after XP is reinstalled and
it's up and running
I want to know if this will work, or if theres some elusive "security file"
buried deep within the computer's system files to verify that the game is
real and not pirated.
If there is one, is there a way to find it, take it out, and put it back
where it goes after the hard drive's been wiped?
-I would try to start the game on the second computer to see if a security
block really did exist, but unfortunately somehow my disc drive's been
disabled and it won't register that i've inserted a disc... Sheesh computers
really do hate me...
Anyway, the question is.... Will the theory work?