you will also find that if you create index.tcl/index.adp in server0/www that they will take precedence over the ones in packages/subsite
that is imho a better solution since it will survive updates.
a final trap for anyone listening - even though www has precedence, if you want to use a index.vuh as your home root (eg using etp for your home page), you need to delete/move the index files in subsite as well, since the index.vuh only kicks in when all other options are chosen.
and if you want to rename the index files - don't just add an extension (like .bak) or you may end up with un-rendered source being served...