No permission to access a private MSMQ

On an XP machine there is a private messagequeue that was created by a .net service. When I want to access this private queue in a VB6 application I keep getting an "Access is denied" error. So it seems this is a security issue, only I don't understand why even when I am logged on as an administrator I still can't have access to queue that was created on the same machine. Is there something else I have to take into account.

Sample on how I use the queue in VB6

Public msgQueue As MSMQQueue

Private Sub OpenQueue()

    Dim MQ As New MSMQQueueInfo
        MQ .PathName = ".\Private$\incommingQueue"

    Set msgQueue = MQ.Open(MQ_RECEIVE_ACCESS, MQ_DENY_NONE)

End Sub