1.6.7??? I've never heard they had this version, but anyway, since version 1.7.0 it's not compatible/upgradable w/ older version 1.6.6 and older; in other words, only backup other db but not mysql, then setup password in TWO PLACES just like you did before
If you can't recall how, check Setup Password section on my site for the idea
Have fun,
[
www.jlbn.net] (Basic Guide for WAMP & Add-ons)