@davemac, has the right idea!
@alex38, Sounds like you have a fairly clear picture of your objective or goal. That's a good thing, b/c "Losing wgt" will normally end up as "Losing Muscle." In fact, most people actually sacrifice their Muscle 1st and never really lose much Fat. This is a very common error.
Especially when trying to target the Mid-section abdominal fat. This is generally a hereditary cond. that is greatly influenced by ones Diet, Exercise habits and Stress. (I am one of these people!)
The Mid-section is Very tricky and MUST be chipped away VERY, very slowly. Do not do any highly restrictive, Low Calorie type diets or the Belly fat will generally be retained, (or even added to from the Stress) while the rest of you melts away. The scale will show that you are Losing WGT. but, it will be the wrong WGT. and as soon as you go off the Restrictive high Cal. deficit diet you will gain all of the WGT. back with an additional % of Fat to help the Body Gird against the next season of Famine...
Go get a legit Fitness or Fat test from the YMCA or other source locally (Water or Calipers) and then go back and monitor your results every 3-4 wks. This will be a slow process but, these tests will reveal an accurate visual chart of your progress w/regards to your total Body Composition. i.e. Fat %, Muscle %, total Body Wgt.
Nothing worse then Dieting your Butt off and Working out real hard only to find out you've lost 15lbs of Muscle and 2 lbs of Fat... -this Happens all the time
Good luck!