Search again for Quark and then look for a file called SN (serial number)
probably a small file. Download it. Plug it in when trying to run quark.

It should work.

I regretably have to use both PM and QEx at work. Pagemaker is easier to learn, but it's flakey. Plus most print media companies that have been arround for more than 5 years will be using Quark Express.

QEx works better with most image setters etc. Learn it. It will be worth your while to know both.

Good Luck.

R