Among all the facets I thought aboout on this one, the consideration of bleeds are mentioned early in Anne-Marie's blog on this.
You may need to tone down your design to meet your clients real world ablities on this one. The actual Pantone Spots are out, your client doesn't have any cans of ink, scales, etc.
One of the major problems with Microsoft Office products is their inability to allow import/placement of either EPS (properly - for screen display at all or for printing to non-PostScript devices) or PDF (simply not supported).
When faced with the issue of please prepare us some letterhead or provide us with a letterhead template (they just want the logo and the other material), my approach has been to do the design in InDesign and export PDF. The Word user creates their document on a blank page (leaving room for the stationery's logo, footer, etc.) and when done, saves as a PDF file. In Acrobat, they then use the Background or Watermark feature to add the stationery PDF to whatever pages of the document need that content. Foolproof and maintains the full graphic quality of the stationery as produced in InDesign, including if so desired, spot colors.
Daniel's link is a good one. Thank you!
I was able to almost copy my InDesign layout as a MS Word .dot file. The process is a pain, very cumbersome, and the quality of print is not the same. I can see more companies wanting their letterhead to done electronically in this fashion. The client spends 1000s of dollars for a Brand Identity program and he is left with a MS Word impression. Technically he doesn't get what's involved.
Someone has to come up with a better way!