I repeat: preferably stay away from codec packs!!
Instead install codecs separately if and when needed.
(
adicoto's list of codecs here)
Question:
[Start] > Programs > DivX > DivXCodec > Decoder Configuration Utility
is indeed not there ??
Another possibility is load a DivX-movie in BSPlayer and then
rightclick > Options > Filters > Advanced (> etc)
Is Configuration Utility shown then ... or?