the idea was inspired by a trouble using a right click context menu extension to upload an image to imageshack.
as you know there are right-click explorer context menu extensions..
what i was thinking would be a small commandline tool that would be invoked like this:
SimulateRightClick.exe "shellextension.dll" "c:\myfile.jpg"
or something like that.
i don't know how practical this is, but you get the idea - the exe would act as a wrapper around the shell extension, triggering it on a specific file. the shell extension menu would then want to pop up of course (center of screen?).
dont even know if this is possible... maybe a windows expert like db90h will know..