Help Please, connection error

Hi Friends!

I downloaded WWForums 8.05 and i get runing on brinkster account, but now a Want to run in my Own IIS 5.0, Windows XP SP 2, but i can't make it work

i Get this page result:

Server Error in Forum Application
An error has occured while connecting to the database.
Please contact the forum administrator.

Support Error Code:- err_Access_db_connection
File Name:- common.asp

Error details:-
Microsoft JET Database Engine
Error no especificado ( not specific error)

How I said on brinkster works fine

any body know what's happening?