I would be interested in hearing from you too PB. Keep posting on here.
There are plenty of paid opps for NGOs (Non Governmental Organizations) with the right qualifications. These are usually paid, however, and require specific backgrounds.
If you do end up wanting the contact info on my Cambodian friends there (and I do know of a philanthropic company I did some nearly volunteer work for as well in Phnom Penh), PM me. Anything I can do to help is my pleasure. The company I volunteered for was not an NGO but rather a company that helped the disadvantaged get training in computer skills. It was set up entirely by philanthropists from Great Britain.