Hey I just bought Trilogy an wondered if I can install this on another computer too or if I need another CD key. Or if I can uninstall it on this one an install it on another if I ever would need to.
Worry not, Guild Wars does not make use of SecuROM or similar software that prohibits multiple installations. You can install Guild Wars on as many computers as you like - CD Keys are tied to the account, not to the installation.
In fact you can simply copy the installation folder (mine is C:/GW/ ) to any computer and play it straight from there. I've handed out my GW.dat file to a lot of new players so they don't need to download a full image.
yes, your 'account' is not on your computer so you can put the data file on any computer you wish---NOTE---you will only be able to access your account on ONE computer at a time though....if you try to do it from another while on one, you will kick yourself off the first.