Printing from Word for Mac to HP printer

I recently bought a MacBook Pro to replace a badly performing old Dell Laptop. I have a HP OfficeJet 7310xi printer connected to a Dell desktop running XP SP2. We are hardwired with Cat 5e ethernet and are running a standard LAN with the MacBook and DELL sharing the printer. The appropriate drivers have been installed on the MacBook.

When trying to print a document created on the MacBook using Word for Mac 2008 the print comes out looking like gibberish. It looks like this version of Word is defaulting to saving and printing ".pdf" files.

Is this pdf format the issue? How can I make the Mac Word program work in the ".doc" format that worked with the old laptop? Is there something else I'm missing?

Are you sure that the .doc file isn't simply damaged or corrupt?

If so, check this.

If not, Have you tried opening it in TextEdit? It's in Applications/.
As I have found, it works very well with Word docs.

Using Office 2008, make sure the default setting for Word is .doc and not .docx. You can make changes going into Word Preferences. Ac coding to HP Leopard drivers are built into the operating system:-

HP Print Drivers for Mac OS X v10.5 (Leopard) HP Deskjet 841c Printer - HP Customer Care (United States - English)