Err.. software without installation documentation :/. Anyway, looks like you only need to drop files to php lib directory (look from php.ini) and then follow example..
Well that was my first try, so I tried to lookup if that lib path was recursive anyway, is it important that all files be in one directory in this path?
You do understand php paths and includes, right? You want it somewhere that is in that.
And I vaguely think that you might need to "register" it using pear.
mark