So, in regards to the Ghost Template, the errata tells me that the equipment with which a ghost dies will often become ethereal with it -- essentially part of the ghost -- and become "ghost equipment."

Fair enough.

This equipment is, ostensibly, "part" of the ghost because it's involved in the transformation. The notable point here, though, is that it is ethereal equipment. Aka, the ghost has no *material* possessions.

How would this interact with Vow of Poverty? There are certain types of "good ghosts" (such as a Sacred Watcher) so alignment isn't an issue. VoP is very clear to state "material possessions"....so ethereal possessions wouldn't count, at least in my mind.

I would like confirmation of this thought process, however. As a side note, I'm the DM of a campaign where I'm working with a player during character creation, and am trying to help them make the build they want since 3.5e isn't their main system.