You have to find what works for you. Personally, I find that eating 3 small meals a day with two snacks keeps me from getting hungry but for some people they prefer to eat 3 regular meals a day and not do any snacking.
You mentioned that you are hungrier now that you are working out and that is because you are burning more calories! Make sure you have input the amount of calories you are burning correctly into Sparkpeople because you may be eating too little food. If everything is set up correctly and you are still hungry then eat! I know many people will shame me for saying this but I don't believe in depriving yourself of food. If you are eating a healthy, balanced diet and are still hungry then have something else - a piece of fruit, some vegetables, a handful of nuts, etc. Don't over eat but do eat something. Give yourself some time and see if you feel better.
One other trick I use is to drink flavored tea. I LOVE tea and currently have 6 flavors sitting on my desk at work. If I know I have eating a lot already then I have a cup of tea and that usually helps my hunger go away until my next meal or snack.
Once you make your nutrition tracker available for people to see there may be other hidden reasons you are always hunger (eating the wrong kinds of foods - empty calories).