I am completely blanking-out.
I want a content type to have the path field, so I can alias its path from node/n to /foo.
I can't seem to remember how to do this. When I go into Content>Content Types>Edit My_Content_Type, the path field is greyed out and doesn't display when I view an instance of the content type.
I made sure paths module had the correct permissions, but no-go.
How do I get the 'path' field to show up when creating or editing a custom content type?
Path is not a CCK field, it is it's own system, even in D7. It is used just for path aliases so won't, usually, be displayed in a node.
As Nikit suggests, pathauto may cause the box to be grayed out. Also I suppose you should make sure the path module is turned on.