I have seen the article: KBA-01149 : Transitioning a Server and Changes to c360 Tools (http://www.c360.com/Support/Default.aspx?tabid=23a72820577a443aac45d2bbbe95e706&linkId=2bac9bd3dbc3464d86273ab33f0efbf4&Number=KBA-01149&operation=KBDETAILS&subject=1)

But this doesn't really cover moving an existing database and keeping the data.  If I uninstall and reinstall, wouldn't I lose the data?

Can someone provide some specific instructions on the steps to perform these two different tasks...
Task 1.  Change just the database server of c360 keeping the CRM web server the same.  (Is this just connection strings in config files and if so which ones?)
Task 2.  Change both the database server and the web server. 

We have Core Productivity Pack, mainly just using Relationship Explorer.

Cheers,
Phil M.