Can't print preview or print in Excel or PowerPoint

Gosh, I've been so busy fighting wireless networking issues with Leopard, it wasn't until today that I finally had a need to print an Excel spreadsheet and much to my slowly building frustration with Leopard, that too is a no-go in Leopard. In either Excel or PowerPoint, using "print preview" yields only blank pages and if you attempt to print the document, you get precisely the same, just blank pages.. Such is not the case in either Word or Entourage... Those both print ok... What I also find somewhat ironic is if I dump those same Excel spreadsheets into Parallels under Windows XP and the pc version of Excel, I can print the documents with no problem... Ouch... On my mac I'm running the most current version of Office (11.3.9) and my printer is a Brother PrinterMFC5440CN. I've encountered this same printing issue on both of my macs, a MacBook Pro and a G4, both running Mac OS X 10.5.1... Anyone have any possible solutions??? thanks... bob...