ASP db connection problem in IIS7

Hello!
I've  recently installed vista on my computer, I'm an ASP programmer so I installed  IIS 7 .
 I can run classic ASP pages, but when the page is connected to Access data base an Error appears:
ADODB.Connection error '800a0e7a'
Provider cannot be found. It may not be properly installed.
/Project/index.asp, line 6
 
Can someone please help me?
Thank you!