I havnt used access for some time, this is a currently working connection string:
Set Conn = Server.CreateObject("ADODB.Connection")
Conn.open "DRIVER={Microsoft Access Driver (*.mdb)};DBQ=C:\Inetpub\wwwroot\rootDir\DB\name.md b"
A good resource
www.connectionstrings.com
BTW: Dont forget to give the IUSER the correct permissions to the dir where the .mdb file is
Wind is your friend
Matt