[groovico]

It'll be in the php files thats generate the pages, I would imagine it's a little more involved than just changing the page name as all the other links have to be altered to, for example the pages nagvigation bar at the top, links from the sub cats themselves, links in the best sellers, featured etc etc

It's not really worth it in my opinion unless you have a very specific reason for doing so. Search engines for example don't care what your web page file name actually is.