OK so this morning I'm using a laptop which has Access, albeit the 2003 version, and I'm playing around with it.
The best I could do was the highlight some text in a form and Allt O to bring up Format then d for Conditional Formattting and bold all the highlighted text.
Sadly, every field has to be treated thus so it's a pretty bad suggestion. Annoyingly, I can format the relevant Table in two clicks but it doesn't impact on the form.