It USED to be the case in Office 2003 that you could find "macros" and -- IIRC -- you had a "record macro" option.
But, in PowerPoint 2007, under View->Macros, you get a macro box. None of the options are "record". If you put in a name, you can select "create", but that takes you to the VB editor. If you edit the slide manually, it doesn't generate the VB code.
Basically, you don't seem to have the option of defining your macro by a sequence of keystrokes/mouseclicks/whatever.
"Record" is an option in Excel 2007 so it's not like this was removed from macros.