I am writing some 32 bit ATL controls in C++ that I am trying to test in  a
vb.net app.

THe problem is my machine is runing 2003 x64 so the VB app is running ins
64 bit so can't load the atl controls (class not registered).

I believe you can target the dotnet app to 32 bit windows, but it's not
clear to me how.

I've tried messing around with the configuration and setting the VB.Net
Platform to a new one marked as x86, but this doesn't seem to make any
difference.

Can anyone point to some useful documentation or explain what I need to do?

Iain