When you download the WNASPI32.DLL from Ahead, you do it by clicking the below link on your web browser (perhaps Internet explorer?):
When you click on the link, your browser gives you a save dialog.
Click "Save" and you'll get a dialog called "Save As".
Now within that dialog, using the "Save In" pulldown menu navigate the dialog to the hard drive where your EAC is located. Still, within this same dialog navigate down to the exact folder where your EAC executable is located (it's called EAC.exe).
Now, still within the same "Save as dialog" make sure that the "File name:" still reads "wnaspi32.dll" (without the quotation marks). Now press save.
You have now installed the Winaspi32.dll to your eac folder. You should now restart EAC (if it was running while you did the above) and follow rest of Andre's instruction to configure EAC to recognize the ASPI-layer you just installed.
I hope that helps.