Redownloading

I had to reformat my hd. So I lost GW.
GW has grown a lot, thus re downloading gw will take hours which i dn have.
MY other comp has gw.

I copied the Gw.dat and transferred it 2 other comp but evrytime i open gw it erases the gw.dat from my other comp and starts it over. Is there neway to transfer it and make it run? 2gb is alot of data to dload.

Actually I just had to reinstall all three GW versions on my computer, and it really didn't take more than 2 hours tops..took a bit to load in the first town, but after that I haven't had issues with waiting a long time to load in.