Ian - you may wish to consider contacting the 3 major credit reporting agencies (sorry, I don't have any links readily available) and putting a fraud alert out.
Also, keep a close watch on your home and any vehicles that aren't garaged for the next month at least.
Really sorry to hear that this happened to you. I had my daily commute vehicle (a POS Celica) broken into about a month 1/2 ago. The only thing of value they got was my cell phone charger.