Customize programs available off start button

I have been looking at that myself and have been looking in the registry for that start menu.
I will post here, if I find anything.

Windows 8.1 brought back the Start button, but not the Start menu. There are numerous third-party programs that give you a Start menu in W8/W8.1. The one I use is the excellent (and free!) Classic Shell:
http://www.classicshell.net/

I not only don't like the W8 interface, I don't like the W7/Vista and XP interfaces, so I've been using Classic Shell to give me the good old W2K (truly Classic!) interface on all of my Vista, W7, and W8 computers (on XP, I use its built-in capability to get the classic Start menu via Control Panel>Taskbar and Start Menu>Start Menu>Classic Start menu). Of course, if you prefer, you may configure Classic Shell to give you the XP or Vista/W7 interface on W8.

Four other options for a Start menu in W8/W8.1 are IObit's Start Menu 8 (free), ReviverSoft's Start Menu Reviver (free), Stardock's Start8 (not free, but currently just $4.99), and SweetLabs' Pokki (free).

Here's a recent (16-Oct-2013) PCWorld article that discusses all five mentioned above for W8.1:
http://www.pcworld.com/article/2054422/five-tools-to-bring-the-start-menu-back-to-windows-8-1.html

Also, here's a somewhat older (15-May-2013) but more comprehensive CNET review that discusses all of these programs and some others (except IObit's Start Menu 8) in detail:
http://reviews.cnet.com/8301-33642_7-57496506-292/how-to-get-the-start-menu-back-in-windows-8

The CNET review was published before W8.1, so is about just W8. Regards, Joe

Ok. Simply put I want to add regedit to that menu. Where can I do that? It must be in the registry somewhere.

Sorry...I don't know how to do that off the top of my head, so it would take some experimentation (if it's even possible), which I'd be willing to do, but my only 8.1 system is down for the count right now. Regards, Joe

To add regedit: hit the start button, type regedit. regedit.exe is searched and found. rightclick it and select "pin to start".
To remove: rightclick the tile and select "unpin".

Thank you but that isn't what I was looking to do. If you right click on the start button you will see several useful programs to use. I was looking to add regedit to that list of programs.

Ah.
I haven't heard of anyone who managed to customize it. But haven't googled for it either.

Cool. thank you

You're welcome!