Getting Autocomplete in VS 6.0 to work

[SbOlly]

Does anyone know how to make Visual Studio 6.0 autocomplete work for external libs?
The source browser file is built (i.e if I click 'Goto Definition of 'QLabel' it will go to the correct Header file), but it refuses to do anything clever with it.
The AutoComplete is working for any locally defined classes, just not external classes. Am I missing something obvious here?

Kinda annoying, cos I hate constantly reading documentation

[SbOlly]

Oh, it seems using Visual Assist solved the problem...