In order to properly condition my SQL Express 2008 installer/updater
(Installshield), I need to know which Registry keys to check for SQL Express
2005. I need to know:

1. Registry key that exists only when SQL Express 2005 Management Studio is
installed (with or without the 2005 engine).

2. Registry key that exists only when SQL Express 2005 Engine is installed
(or without the 2005 Management Studio)

Any help greatly appreciated.
JBaker