Error Apps Server (do not use localhost)

Hi,
I have a machine that is running on Windows Server 2003 with two windows XP Proff VMs. I want to connect both VMs remotely that is; Laptop XP prof; and all PCs are in a LAN and I want to connect via VNC viewer simultaneously. So during the setup I get this message;

Server Setup Erro.
Error Apps Server (do not use localhost)
(Not correct: AppsServer = vmxpproff –vmxpproff:vmxpproff)
I couldn't connect the VMs. The firewalls are disabled, so I do not know what the problem could be.
Anyone with an idea concerning the error can please assist me.
Thanks for help.
