Are you writing the plugin and need the handle or do you have a plugin that you need to pass the handle to?
If the former, then you would probably have more luck in the "DLL Talk" board, but I believe you need to look into globstruct. Search the forums for it and I'm sure you'll be able to find something on it.
If the latter, it seems odd a plugin would need that handle and not be able to get it itself, but I believe you could do it with another plugin...I think it may be possible with one of IanM's plugins. I'm fairly sure I've seen it somewhere but I'm afraid I can't remember off the top of my head.

Previously TEH_CODERER.