<p>Basically, what I want to is be able to explore an ActiveX DLL.
I normally fire up VB 6, add the DLL to the "References" of the project, and use Object Explorer.</p>

<p>However, in this particular machine I can't install VB / VS.<br>
I'm sure there's a tool out there that does this. Does anyone know of one?</p>

<p>Thanks</p>

Is it possible to download the component from that machine and examine it locally in Visual Studio? (That'd be my first suggestion.) (And BTW, the .NET versions of Visual Studio also feature a VB6-like Object Explorer which works nicely for this.)
Alternatively, and it's not free, but you might try
ActiveXplorer
. (I haven't tried this, but it looks promising.)
(Discontinued)