Welcome to iMore.
I have to be honest and tell you that I don't believe there is a printer out there that can support you computer. You iMac is 17 years old. You may be able to find some new old stock that your iMac may support, but the chances are very slim. Wish I could have given you better news. I would suggest trying to move your Quark document to a newer machine and then trying to print it.