Topic: CMSMS

After installing Word Press successfully, I decided that something like CMSMS would be more useful for what I want to do. So I created another database on my host and installed it, as it says on the box it is simple.
Slight problem, I now get a Error establishing a database connection on the wordpress site.
Host is hostpapa and has 100 database allowance wordpress is www.mysite.com/blog and the cms is www.mysite.com/cmsmadesimple. Both are in folders on public_html.
Any thoughts as to what I have done wrong please. Not found anything on any forums yet.