I have recently published a program called "WeightWare"
(http://www.WeightWare.com) that you may find useful.  As the name suggests,
it focuses on weight and health tracking.  It allows you to understand your
current weight, set appropriate weight goals, and track your progress.  In
addition to weight, it also tracks other key health indicators (e.g.,
resting heart rate, blood pressure, body measurements, body fat, etc.).

For its various reports and graphs, WeightWare depends on frequent weigh-ins
(daily is best).  It uses several statistical techniques to filter out the
normal day-to-day fluctuations in weight to show you exactly how you are
progressing.  Based on your weight alone, it will show you what your daily
caloric deficit (or surplus) has been, and includes "forward-looking" graphs
to alert you when you are getting off track.

It is not, however, a menu planner or a calorie tracker.  Perhaps I'm just
lazy, but I am of the opinion that calorie counting is too time-consuming
and error prone, and only focuses on one half of the calorie deficit
equation (i.e., calories in). Recording my daily weight, however, takes less
than a minute and the feedback I get from WeightWare is sufficient
motivation for me to keep my weight under control.

If you're interested in trying it, you can download a free, fully
functional, 45-day trial version from the website and see if it meets your
needs.

GG
http://www.WeightWare.com
Your Weight and Health Diary

I use Diet Sleuth but have a Mac. they said they were doing a program
for the PC.

Try a search and I belive it is distributed by Black Cat Systems and
costs $25.

NutriBase      www.dietsoftware.com