Entry-specific Permalinks

I'd like to set up single-entry permalinks. Following the
instructions on the official site results in a 404 error.

<a href=";$url$path/$fn.$flavour"&gt;$title<;/a>

I'm pretty certain this is a small goof up, probably something I did.
My main flavor is html and entries are txt files. Blosxom is index.
cgi on my server's root (web documents root), and all entries are in /
blog (/blog for the purpose of links, not for absolute system
directory).

Any ideas?