I'm sure this is too simple to require the skills of the PowerpointGuruHiveMind, but I can no longer edit datasheets in Microsoft Graph, in order to create new charts in Powerpoint for Mac 2004. I must have checked some kind of "protect data" checkbox as a default, but I can't find it to switch back. Sheer frustration must have overwhelmed my google-fu.
Any advice for my MacBook Word / Excel / Powerpoint woes? [more inside]