Bakogirl,
to the forum and to Keystone's wonderful world of RVing.
The PDI checklist you're looking for is located in the General Questions category. You'll find the link here:
http://www.keystonerv.org/forums/showthread.php?t=5129
The actual link to the PDI checklist is in the very first comment. I'd urge you to download it, print it out, study it well and be sure to take it with you when you do your orientation with the dealer's representative.
If there's anything you don't understand or anything else that you're not sure of, you can use the search feature located in the blue bar at the top of every forum page. If you have any problems, just ask a question and someone will surely have answers to help you.
Again, welcome, we're glad to have you as a member.
John