ImageList

I'm writing my own ImageList control using the COMCTRL32 library and I ran into the ImageList_Write function on the MSDN CD. Is there any way to implement this function in VB?? The only argument is a pointer to a stream(object?) in C++. Can I fake the stream with a Byte array? As is I have the GetDIBits function reading out the ImageList images into a Byte Array, which took me a few days to figure out, but if I can get the same effect with the ImageList_Write function I'd rather do that and stick with the native functions. Maybe I should mention my purpose is to retain the ImageList images so they don't get wiped out between design/run/dead time. The GetDIBIts function works OK but it takes a lot of processing...