Voluntary work in forestry in Africa wanted

Hi, I come from Czech Republic. I am 27 years old male. I have degree in forestry. I am interested in tropical forestry. I am looking for some voluntary work next year 2007 in Africa: Forestry, Development of rural comunities - agriculture, forestry. I have imunisation against Hepatitida A,B,C. I have driving licence. I speak Czech, English, French (little), Spanish (little), Russian (very little)
I live in Scotland now. Please contact with details me if you have some vacancy.