Is there any document describing the manual cleanup of registry/services in Windows after an out-of-

I recently did an out-of-place upgrade from 11.2.0.1 to 11.2.0.3 (Windows 2008 server 64-bit).  It left the registry and services a mess with the old ORACLE_HOME and registry entries that need to go away.  I'm looking at doing this manually, but surely someone must have been down this path before?  I counted about 20 registry entries pointing to the old Oracle Home (some of them are okay, as they are under the old dbhome1 start menu items.  Additionally, the MMC Snap-in works with the old ORACLE_HOME/MMC Snap-ins/..., but not with the new one.  When I use the 11.2.0.1 snap-in, it