If you were out of work from April 2002 - Sept 2002 (if I am reading your post correctly) then that is only a six month gap that occured nearly two years ago.

Use some of the suggestions given above but keep it honest. Time out due to family concerns etc.

Emphasise your latest most recent work and what you contributed to that job and what you could contribute to this one.

Better to show achievements and results where you can.

You say you have moved jobs a number of times. Were there good reasons for doing so? There often are.

Over the last few years I have interviewed a lot of people for jobs. Build up the postive side and do not dwell on the negative issues as this could affect your demeanour and attitude on the day.

Good luck.