Hi Moshik,
There is an example for inserting images in your report in this discussion:
http://forums.ni.com/ni/board/message?board.id=330&message.id=2819&requireLogin=False
TestStand uses the sequences named reportgen_***.seq that default to the
C:\Program Files\National Instruments\TestStand 3.5\Components\NI\Models\TestStandModels directory for report generation.
You can edit the reportgen_xml.seq for XML reports.
Is it really necessary for your DLLs to do the image insertion?
Gavin Fox
Systems Software
National Instruments