2 questions

1) how do i access the Shell extension for editing, is there a folder or registry entries?

I want to remove the annoying ones

Thanks,
Edward

Im a little lost with regards to what you wish to achieve, could you please be a little more detailed with regard to what exactly you want to do.

Assuming you're running either XP or W2K, and without knowing where exactly in the right click menu you're referring... Start | Run | Type regedit, and click OK | Expand the following branches...

HKEY_CLASSES_ROOT | * | OpenWithList
HKEY_CLASSES_ROOT | * | shellex | ContextMenuHandlers

... this is where some items are located.

You can also go to a specific file extension (for example... HKEY_CLASSES_ROOT | .txt | ShellNew) | Right click on the ShellNew key, and select Delete (if the item shows up in the "New" context menu). Other locations in the registry for you to check...

HKEY_CLASSES_ROOT | Directory | shell
HKEY_CLASSES_ROOT | Directory | shellex | ContextMenuHandlers
HKEY_CLASSES_ROOT | Drive | shell
HKEY_CLASSES_ROOT | Drive | shellex | ContextMenuHandlers
HKEY_CLASSES_ROOT | Folder | shell
HKEY_CLASSES_ROOT | Folder | shellex | ContextMenuHandlers

Also... Customizing Right-Click Menu Options in Windows
http://www.jfitz.com/tips/rclick_custom.html