Thanks for your quick response. I will try to explain the rpoblem a little more closely.

Once I have created a project in Quark 7, I have the option to SAVE or SAVE AS.

When doing this, the pop-up window gives you only two options: Save As QXP or QXT. There's not an option to save in lower version—i.e. Q6

Secondly, there's an option under FILE to EXPORT the project or PDF. When PROJECT is chosen, I can choose version 6 but when trying to open in Quark 6 I receive a message that: "This file cannot be open with this version of QuarkXpress..."