Thanks for sharing this with us Piamed.
There are lots of ways you can raise money to help out, a sponsored event being the most obvious. However, I guess that depends on your fitness and bravery
I'm sure others can think of many more, but here are a few starters:
Parachute jump/skydive
Fun run or half marathon
Cycling event - either miles travelled or point to point
Raffle/tombola at your local pub, club, football team, school, church ...etc
In order to maximise your chances of raising funds, good publicity is important, it might be worth you speaking to your local radio station, newspaper, newsletter, church, sports centre ...etc
However you decide to proceed, very best of luck to you, and I for one think you are doing a very compasionate thing. Sadly, most of us, including me are too wrapped up in our own little world and problems to help out a fellow human who is less fortunate than ourselves.