So, I give up.  After hearing how bad GoDaddy Hosting support is, I finally experienced it.  After calling and waiting 30 minutes on hold (my dime) for a tier one support person to tell me it would be elevated to a tier two, but I'd have to call back in an hour because they were all in a meeting (WTF??).  So I call back, 15 minutes on hold... pass through tier one to get to tier two... told that it was an FTP issue (WTF??) when actually it was a MS SQL database issue.... not to worry they said, it would be 24- 48 hours and someone would contact me via email.   Three days later, I'm told via email that GoDaddy does not support this install of DNN and I would be on my own?  WTF?? They have things so tied down you can not do anything............

So... long story getting longer.... I moved to Webhost4life.  Cheaper. Faster. Better Service.  Larger Database (2000 MB). Unlimited bandwidth.  Like comparing the Six Million Dollar Man to a turtle... if the turtle had been dead for six years.  WTF was I thinking?  GoDaddy is great for domain registrations, has a hot chick in their commericals, but is rotten for hosting.

Charles,

I have a customer that wants to install a second DNN 4.0.2 application to his account with us. He wants to use the SQL 2005 database that he is already running an installation of DNN 4.0.2 on. He tells me that another host has done this for him by simply installing it again but changing the "objectQualifier" in the web.config to a new value, so that all tables and sp's will have a different prefix.

After 3 attempts, the 2nd application has failed to install all 3 times. Is this possible(?), and are there directions anywhere for doing this? 

I notice you state above that a second database is required which had always been my assumption, and preference.