connection string help

i try to make a vb.net application but i've some problem with the connection string.. i don't understand some things: i don't have a sql server and i use access, how is the connection string for this kind of db?

this is the error: find a null value instead of an istance of an object...

the code:


Dim strconn As String = "Provider=Microsoft.Jet.OLEDB.4.0; Password=""; Data Source= c:\learningvbdata\ProvaDati.mdb"
Dim objcon As OleDbConnection
objcon.ConnectionString = strconn
objcon.Open()

??????

I think its because you never declared an instance of the oleDbConnection object

VB Code:

Dim objcon As New OleDbConnection