I don’t really know in what format you deliver your reports to your clients, and it would be great if you could comment on that - but here’s a tool that I’ve used before to turn a word document into an “uneditable” (not saying it can’t be reversed) PDF version.

Reasons why you may want to do that.

1- You’re not giving out a template report document, therefore making it harder for someone to edit/redistribute.

2- Making sure that your Word document isn’t disclosing any information isn’t easy. I’d recommend taking a look at all strings (don’t forget ucs2be)  inside the binary, before sending that out.

http://www.pdfforge.org/products/pdfcreator/

Thanks