Installing 2.2.2 in a sub directory off of the parent root. www.parent.com/forum

Kept getting "The type or namespace name 'ProfileCommon' could not be found (are you missing a using directive or an assembly reference?)"
when attempting to install YAF with www.parent.com/forum/install/default.aspx

Found another post here that ended up fixing it for me.
http://forum.yetanotherforum.net/yaf_postst10166_SOLVED-1-9-4-Error-with-DNN5--The-type-or-namespace-name-ProfileCommon.aspx 

Created a /Providers directory off of the existing /bin folder and copied YAF.Providers.dll to it.
Using the YAF.Membership and YAF.Roles providers in my parent website to pass logged in users to the YAF forums, so I had keep a copy of YAF.Providers.dll in the \bin directory as well. Hope that doesn't burn me somehow. If anyone can tell me how to modify the part of my parent web.config to show the path to YAF.Providers.dll to be /bin/Providers I would appreciate it. I can then remove the copy in /bin

Interesting, this is a fresh install and I first played with a standalone version of YAF. That went fine with YAF.Providers.dll being in /bin. It was only when I made a fresh install of YAF as a subdirectory under my parent website that YAF couldn't then find ProfileCommon