Hi, lisaisla,
if you want zooming and sharpness then you could create SWF (Flash). With Quark Interactive Designer (for QuarkXPress 7) or QuarkXPress 8 (Interactive Designer built in) you can easily create Flahs, even convert your existing print documents (and add interactivity, sounds, videos, motion etc.)
We have a dedicated forum for this, have a look: http://forums.quark.com/40.aspx
Also, there are Test Drives (trial versions) available for both:
Quark Interactive Designer: Mac & Win (for QuarkXPress 7)
QuarkXPress 8: Mac & Win
Best
Matthias
Matthias Günther
Senior Product Manager
Quark Software Inc.(Please note: As I am traveling frequently, answering your post might sometimes take longer)
Want to easily publish for the iPad, using high-fidelity designs with stunning interactivity? See here: English:
http://youtu.be/Gldk5lvXXTA French:
http://youtu.be/nsgB4Q7lQzg German:
http://youtu.be/lecdenqaUGY Italian:
http://youtu.be/wjBpYZsF-8s
Need help? Contact Quark's support:
http://support.quark.com/contact_us.html
Please don't install the newest update 10.7.3 of Mac OS X Lion yet. For details please see here: http://goo.gl/AzKeR