though perhaps it's worth figuring out as now my game won't run. *grumbles*

well before I hit up google, vista is a bit of a bitch when it comes to some games. However, if you have not already, my dear. Sign up for the age of conan forums and look in the Technical Issues area. It has a lot of the issues you're experiencing.
Also, do you have an error code, or does it just not run?

Also, what are the specs of your system? If you do not know, you can find out by right-clicking on My Computer and selecting properties (should still work in vista)

I got it to work = also the conan forums have never worked for me. They always tell me I'm not registered.

I'm playing with Vista SP1 with no problems.

I had the same problem with the forums. About a week after I submitted a peition through customer service, they fixed it.

Yeah I sent them a message - no response yet though.

Do yo uknow it is SP1 that is causing your issues?

No! I'm afraid to uninstall it though >.>

SP1 is working fine on my machine...