I just recently found edugeek .. what a find!
First post saying thanks so much for this custom adm. Great idea.
I came across this start menu issue about a month ago and have been coming back to it since.
I created a custom adm last night but i wasn't really happy with it, and i think this is a better idea.
I followed the idea of removing a couple of entries in HKLM\SOFTWARE\Classes\Folder\shell\open - which is ok but i was not happy in case of knock-on effects later on, as it removes Open option for folders. Tho at first testing it does seem to effect only the start menu ... but!
I'll check out this adm on Monday Many thanks!