Help i need to format my computer

Ok so im reinstalling windows and was wondering if anyone knows how to find the files that store the "decompressed" game files so i dont have to decompress and get all the updates agen if so thanks

Well there's generally one 2GB data file in the Guild Wars directory, but I don't know if copying that will work

Default location is c:\Program Files\GuildWars\gw.dat
It is around 2gb as Carth' mentioned

Back up that file.
Do the format/install windows.

Start to install guildwars
Exit GW
Replace the new gw.dat with your 2 gb version.

kool thanks im up and running like new thanks