<p>I have created a custom dialog for Visual Studio Setup Project using the steps described
<a href="http://www.codeproject.com/KB/install/vsSetupCustomDialogs.aspx?fid=419622&amp;df=90&amp;mpp=25&amp;noise=3&amp;sort=Position&amp;view=Quick&amp;select=2640482&amp;fr=26" rel="nofollow noreferrer">here</a></p>

<p>Now I have a combobox in one of my dialogs. I want to populate the combobox with a list of all SQL Server instances running on the local network. It's trivial to get the server list ... but I'm completely lost on how to make them display in the combobox. I would appreciate your help and some code might also be nice as I'm beginner :).</p>

I've always found the custom dialogs in visual studio setup projects to be woefully limited and barely functional.
By contrast, I normally create custom actions that display winforms gui's for any remotely difficult tasks during setup.  Works really well and you can do just about anything you want by creating a custom action and passing a few parameters across.
In the dayjob we built a collection of common custom actions for tasks like application config and database creation / script execution to get around custom dialog limitations.