Const ADS_SCOPE_SUBTREE = 2

Set objConnection = CreateObject("ADODB.Connection")

Set objCommand = CreateObject("ADODB.Command")

objConnection.Provider = "ADsDSOObject"

objConnection.Open "Active Directory Provider"

Set objCommand.ActiveConnection = objConnection

objCommand.CommandText = _

"Select Name, Location, operatingSystemVersion from " & _

"'LDAP://DC=midominio,DC=com' where objectClass='computer'" & _

            " and operatingSystemVersion = '5.1 (2600)'"
objCommand.Properties("Page Size") = 1000

objCommand.Properties("Searchscope") = ADS_SCOPE_SUBTREE

Set objRecordset = objCommand.Execute

objRecordset.MoveFirst

Do Until objRecordset.EOF
    MsgBox "Computer Name: " & objRecordset.Fields("Name").Value
    MsgBox "Location: " & objRecordset.Fields("Location").Value
    MsgBox "Version S.O.: " & objRecordset.Fields("operatingSystemVersion").Value

    objRecordset.MoveNext
Loop