Neat utility to convert uppercase filenames

[Paul Crowley]

I'd like to know if there's an "intelligent" casing program out there
that I could feed "BIFF" posts through.  Something that would capitalise
after full stops, and recognise some proper nouns, for example. 
Mixed-case is so much easier to read.
-- 
\/ o\ Paul Crowley aipdc at uk.ac.ed.castle
/\__/ "Trust me, I know what I'm doing" - Sledge Hammer