I'm having the same issue, both with Windows 7 and XP. I put the .dll file in the installation folder and the system can't find it. I followed the recommendation to put it in the Program Files(x86) location on the Win 7 machine but couldnt find any such directory. I can see signals, but can't tune without the .dll and no audio from the speaker jack, except when the computer sends Windows tones that way.
If I knew the right questions to ask I would. The kit assembly went very well, but I'm dead in the water at the moment with software issues. Does anyone have a true step by step process out there to get one of these working? I need a procedure that assumes (correctly) that I don't have hardly any computer knowledge.
Thanks ... 73 .... Ron