You can load the form but dont show it. As long as its loaded into
memory and not visible the image will be reference-able. The only
thing I found was that .Picture only works in the VBA of Outlook
and not in an addin. The .FaceId will work, but you can only use
pictures from Outlook menus or toolbars and not any custom
images. The .PasteFace method seems to work but you can not
assign a mask for the pasted image.