Here is an abstract of the MultiBlog Instructions:

QUOTE
MTMultiBlogEntry, MTMultiBlogComment, MTMultiBlogCategory, and MTMultiBlogPing are container tags for the corresponding objects. An error will be returned if the current blog does not have access to the object.

Arguments:

    *id: the id of the object to contain


Question: does anyone know what id the arument is looking for?

Many thanks

Jeff