If you have outlook and try to print an email and the font is incredibly small, then you will need the hotfix from kb932538 referenced in the article on Sandy's page. I would link to the Microsoft site but the knowledge base article is not published which explains why you can't find any details on this problem when you search in technet (sigh).
I'll be requesting this one for my customers on Monday morning as I have at least two desktops that are having this problem. The interim solution is to hit reply or forward and then print the email.
Update I installed this patch on a customer site this morning and it approximately doubles the size of the font so the printout is now just about readable - still nowhere near the size of the printout if I hit forward (or reply) and then hit print. I'm not sure how to go about sending feedback to Microsoft that this doesn't solve the problem.