TUN/TAP Dosemu

I'm trying to get the following script working. When I do an "ifup tap0", it doesn't do anything. Any help is greatly appreciated.

- Begin /etc/sysconfig/network/scripts/ifup-tap0

#!/bin/bash

DEVICE=tap0
BOOTPROTO=static
IPADDR=192.168.1.26
NETMASK=255.255.255.0
NETWORK=192.168.1.0
BROADCAST=192.168.1.255
ONBOOT=yes
IPXNETNUM_802_2=00000003
IPXPRIMARY_802_2="no"
IPXACTIVE_802_2="yes"

- End /etc/sysconfig/network/scripts/ifup-tap0