Go to this site: . There are three ADOCE31 related downloads. Of the two that contain the DLLs (the CAB and non-doc zip file), I don't recall which one I used, though in theory the only difference is that one is a CAB and the other is a PC based install if you prefer. Hope one of these helps.
As for expanding on the TabControl_lib, be my guest. I only ask that you let me know what you've done so that I can keep up with things. Of course, if you don't, there's not a whole lot I can do anyway