Well, the title of this post pretty much sums it up, but for verbosity's sake:
How do I customize the title of pages displayed - portal et al?
How do I customize the navbar?
File name(s) work.
Incidentally, is there a high-quality source of information on how to integrate (I mean transparently, not just kludge together) Photopost and UBB - or do I have to become an expert with both pieces of 'ware and mod at it a bit?