Why is it not working!?

hmmm i installed xp on my mac. but i cannot install the drivers o my mac on bootcamp...:/ the reason is because my xp cd has sp1! and it requires sp2, how can i get sp2 if i cannot connect to the internet with bootcamp since no drivers are installed? i had an idea i have not tried it yet but here is my idea.
can i just make a copy of my windows folder from my desktop computer and drag the folder to bootcamp hard drive onto my mac? i mean my desktop has been updating all this time it has SP2 so i was thinking that by having SP2 on the desktop it might have it in the windows folder of the C drive.. will this work? if not what can i do?
oh by the way i already tried downloading SP2 onto a thumbdrive and installing it on Bootcamp but no good it says that : there is not enough space blah blah blah and there must be at least 4 megabytes ....but i have 33 gb on there! (left) i gave it 36 gb in total!
it says that it cannot find $NtservicePackuninstall or something like that!
Please HELP!