Yes you can.
1) Make a second user account
2) Copy your Guild Wars files to a new directory so you have 2 Guildwars installations
3) Log in to GW on your main User Account (Administrator)
4) Minimize GW and switch to your second user account (leaving the first one operational)
5) Start up GW from the other GW Folder
6) now u have 2 GW's on 1 pc
