There's online health management called my lifestyle advertised on this website!! Free/easy to use etc.
I have been considering getting an iphone and there's amazing software available for that from diabetespilot.com. It's not a free app (£6.99) but looks incredible: vast database of food info/carbs etc, can work out correctional insulin doseages based on parameters inputted, can synch to email and its also available for palm pilots. pc's windows mobile etc etc. My only gripe is that it's not mac compatable :evil: as I would like to use it on my macbook before getting an iphone.
My brother has an iphone so will get him to buy the app, try it and will report back!
There are also loads of different options if you google free diabetes software etc. Abbott do their own version which is for their blood meters. I haven't tried any myself though.