I just released a new version of wp_pagesnav get the current version from it homepage. I also put some documentation online which can be viewed from the plugin homepage or take the shortcut.
It now support a few new parameters and few bugs were worked out.

Fist of all, great plugin! Do you know how I would be able to make corners on the menu bar “rounded” rather than the square they are by default? I guess it would be done with CSS but not entirely sure how?
Thanks
Mike
Take a look at:
http://home.tiscali.nl/developerscorner/liquidcorners/liquidcorners.htm