Please see the software page (VOSON+NodeXL tab) for revised instructions on how to install the VOSON+NodeXL plugin.
Here is a summary of the instructions:
(1) Save the VOSON+NodeXL DLL file to any folder on your computer (for example you might create a folder NodeXL_plugins in your Documents folder, where you store other NodeXL plugins).
(2) In NodeXL, go to NodeXL->Data->Import->Import Options in the Excel ribbon
(3) In the Import Data Options dialog box, use the "Browse" button to select the folder where you saved the VOSON+NodeXL DLL in the "Folder containing third-party graph data importers" box
(4) Close and then re-open NodeXL
(5) In the Excel ribbon, go to NodeXL, Data, Import. You should see "From Web 1.0/Blog Network (via VOSON)" in the Import menu.
Rob Ackland
Uberlink Team