HELP needed with Active X expecting IStream

Hi,

i have an active x component that loads data from file or stream. I already managed to load a file from file. BUt i really want to load it from a stream.

The load function of this Active X is expecting an Istream. I did some searching and found out that the VB.net equivalent should be an UCOMIstream. So far so good. But now I have the data in a memory stream. Does anyone know how a can write this data to a UCOMIstream so that the activex component can read it ? Could anyone point me to some good documentation about UCOMIstream because i cant figure it out at all!

All help is appreciated!

Daan