I've bought the book, and still can't get past the install portion...

I've uploaded zen cart to my site using FileZilla, but now can't find it,

I've tried.... www.mydomain.com/zencart
... www.mydomain.com/zencart/admin

when I put in my domain name /store
I get this...

Sorry!
There seems to be a problem connecting to our database. Please give us a few minutes to remedy the problem. Thank you.

any suggestions??