Transport a development class

Hi,

I have a developement class on one system(system A), but this development class is not present in other system(Syatem B). I want to transport this developemt class from A to B. In the transport request of the objects created in that development class, i want to add that development class also, so that in system B i can get that development class.

Please let me know how to add the development class to a transport request.

Its very urgent.

Thanks