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#11
Right click on it, select Rename, change it to whatever you want. I just tried in on Win 7 and that works.
Try booting to Safe Mode and renaming it, see if that works. Maybe some program you have running is maintaining the names of some folders. Norton and McAfee may do this, not sure.
Press F8 as soon as the manufacturers logo appears and keep tapping every second until you get the Advanced Boot Options menu. Select Safe Mode. Try renaming.
If he wants to change it why not? It should be doable and in fact works for me as I said earlier.