mini2440v2's IP is using DHCP server, if you has a router as a DHCP server, please connect mini board with it by enthernet.
Then you can use a Terminal tool to communicate with this board, when you start this board , you will see some output message like below:
Configuring network interfaces... eth0: link down
udhcpc (v1.13.2) started
Sending discover...
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Sending discover...
Sending select for 192.168.1.210...
Lease of 192.168.1.210 obtained, lease time 86313600
adding dns 192.168.1.10
adding dns 202.100.199.8
adding dns 202.100.192.68
done.
From this line "Lease of 192.168.1.210 obtained, lease time 86313600", you should know this board's IP is 192.168.1.210.
Now you can login mini2440v2 with this IP. Don't forget the login password is "root". So, you can login as this example:
ssh 192.168.1.210 (Using ssh)
telnet 192.168.1.210 (Using telnet)
Once you login,you can go to this folder named "/ect/rc5.d", under this folder, you will see one file named "S30qtdemo" or S*qtdemo (* means any char),
you just remove this file, that is enogh.