Connecting to Postgres using Windows 7

I'm relatively new to postgres. I've got a Visual Basic (VB)
application that i would like to connect to a Postgres database using
ODBC . Both the VB application and postgres are on my laptop and both
work beautifully independent of each other. Trouble is, I have a
windows 7 64bit OS and therefore I have been unable to get VB to connect
to the database. My code is as follows:

Public Class Form1

Dim cCon As ADODB.Connection

Private Sub Button1_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles Button1.Click

On Error GoTo EH

cCon.ConnectionString =
"DSN=MyDatabase;uid=MyUserID;pwd=MyPassword"

cCon.Open()
MsgBox("O.K.", vbInformation, "Connection Message")
Exit Sub
EH:
MsgBox(Err.Description, vbCritical, "Error Message")
End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles MyBase.Load
cCon = New ADODB.Connection
End Sub
End Class

When I try to connect, all I get is a "Server does not exist or access
is denied" error. I've tried configuring ODBC using odbcad32.exe as it
seems that is necessary on a 64 bit OS, but I'm not sure if that even
the right way to go.

Any help i could get would be much appreciated.

Thanks,

Geoff