Anyone doing match-moving directly in Premiere CS3 (rather than via AfterEffects)? If so, any recommendations?

Boris Continuum 5 has a match-move plugin, but the Premiere version flashes up a message saying "This isn't working in CS3 yet" - at least in the version I tried out recently.

THanks.

Edit: actually I supoose I'm really asking about motiontracking in general rather than matchmoving specifically, it was just that the 'Matchmove" plugin in Boris caught my eye...