Re: nPrinting - getting the Page number at runtime
Well, you will probably have to figure out exactly which format you are using . But if it's Pixel Perfect, on the right side of the Standard Controls list is a item named "Page Info". You can drag that onto your document and it will print the page number.
This may not help you create an OMR or what have you, but it does output the number. And just as a pro-tip, on the NPrinting forum you absolutely must specify how the report is created so we can help you.