It doesn't work because it wasn't a valid registry format. You can edit the registry directly, adding the values in that post... or copy between the lines below and paste into notepad, save as a reg file and run.
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINESOFTWAREWow6432NodeClassesCLSID{DC6EFB56-9CFA-464D-8880-44885D7DC193}]
"AppID"="{534A1E02-D58F-44f0-B58B-36CBED287C7C}