Try www.calorieking.com

I've been using the handheld (PDA) software since April and it works great. The Windows software was just released afew weeks ago, I tried a free trial and it is good too except it can't link between PDA and Windows to syncronize.
I guess that is planned for and update in the Spring.
You can also upload your stats to the calorieking website which has many of the fitday features.

Jaimie