Vb.Net sendmessage() equivilent????

Hi, I am trying to write a little app that sits in the systray and monitors key presses for the "ctrl-z" combination, then minimize the window of an external process. Then maximize it again once finished what I want to do.

The external program is full screen (hasnt got and min/ maximize controls on it)

In Vb6 I could use the sendmessage() api call to tell the app the minimize itself.... but I dont seem to be able to find anything in VB.NET. I have the process object figured out but can't seem to find out how to minimize the processes window.

Anyone got any ideas?

Thanks

PS I tried the VB6 code in .net and it doesnt error... but then it doesnt minimize the window either

try changing the api's longs to integers

Imogen how far did you get with this, its looks like something i could benefit from as for some of my data capture software, however i would want to minimize the active window on ctl c (copy) and then maximise it again on ctl v (paste)

cheers Carl