GPO and MNC music contributions

Hi Clyde,
Thanks for the help! I didn't know the Mod Wheel should be set to about 50%. I now have all the software, but I can't get to the page to download the files with the .gpo extension. This is what I get when trying to get to the page to download them:

This is the url given in the Tutorial:
www.notation.com/MidiNotateComposerGPOTutorialFiles/MidiNotateComposerGPOEx.gpo

and this is the error the browser brings up:
"The XML page cannot be displayed
Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later.

The system cannot locate the object specified. Error processing resource 'http://www.notation.com/MidiNotateComposerGPOTuto... "

I have no idea what "style sheet" is so therefore can not correct the error as they suggest.
I think I would be OK if I could download those .gpo file extensions.
Thanks again,
Fred