To Detect USB Device in vb6 program

Hello Friends,

What is the coding for how to detect the USB device is connected or not in Visual Basic 6(vb6).

I got Sample code and demo application from Thesycon web site.But it did not help me. When i connect the USB device its not at all detecting.

Plz tell me some alternative way.
Else plz give me the coding.

Plz Some one help me its very urgent and very essential.

Thanks in advance
With regards
Seema