If you have good knowledge on interacting with Active Directory(email enabled) using java/.Net please post your bid here.
your program should get/add the data from/to active directory.
I have experimce of working with active directory using .net, and would be happy to discuss your project with you to provide a correct cost and time frame to complete your work.
Relevant Skills and Experience
I have been developing .net based applications commercially since .net release back in 2002.