Query Data Finder Server with ActiveX

I haven't been able to find much resources on how to use ActiveX to Query a Data Finder Server.  I know that this is all supposed to be done with the ToCommand but I have no idea how it is done beyond this.  Can someone give me some direction as to what commands are needed to Open a Data Finder, Create a Query, Merge Queries, and get resulting file paths?

Thanks,

David Vanleeuwen