Welcome to the forum.
Will the output file be fed to the projector as an HD (High Definition) file, or as an SD (Standard Definition)?
Does the Project only contain the Still Images, or will there also be Video included?
If there is Video, what are the specs. of those files?
Good luck, and please let us know a bit more.
Thanks for the quick reply. I am fairly new to Premiere.
It will be an SD file.
The show will be 90% still shots (from scanned and digital photos). There will be short segments of just a few videos. The two included so far have not been trimmed down to size yet but will be about 30mb each; and are Standard Def; 720 x480; w/ a pixel depth of 32. Do you need to know more about them yet?
That covers the main questions.
As you will be doing SD, I would start with an NTSC (or PAL, depending on where you live), and choose DV, which will give you a Frame Size of 720 x 480, and probably Widescreen 16:9.
For the Still Images, I would Scale those in Photoshop, or Photoshop Elements to about 720 x 480 (the general rec. is for 1000 x 750, but unless you plan on doing any Pans on a Zoomed out Image, then go with the Frame Size of your Project). With any video, that is larger, say 1920 x 1080, then I would Scale those down to match the Frame Size of the Project.