Nintendo dsi internet setup with wireless usb adapter

hello all.I got a wireless USB adapter PRONET PN-54WUSB for connecting nintendo dsi to internet.
I have windows 2000 and windows XP on 2 different machines.

On my windows 2000 machine,I put my wireless USB adapter settings as follows:-
network type ad hoc,preamble long preamble,channel 1,authentication shared,encryption WEP,WEP key 10 alphabets in length(in HEX),tx rate 1 MBps and adhoc wireless mode 802.11 B only.
I configured my wireless adapter network settings as follows:-
IP address 192.168.1.1,subnet mask 255.255.255.0 and default gateway blank.
I configured my ethernet adapter settings as following:-
IP address 10.1.1.1,subnet mask 255.255.255.0 and default gateway blank.

On my nintendo dsi,I selected manual set up,entered SSID,WEP key,set IP address 192.168.1.2, subnet mask 255.255.255.0 , gateway 192.168.1.1,primary DNS 192.168.1.1 and MTU value 1492.
I also enabled IP routing on my PC.

After connecting my broadband internet,
when I try to connect from the dsi,
for a few seconds,
in the dsi the signal strength becomes full and on the Pc side the wireless LAN connection connects(it is normally disconnected) and then I get the following message
on the dsi:-
Unable to connect to the internet.
Check your connection settings and access point settings.
For help,visit support.nintendo.com.

Error Code: 052100-1.

Please help with this.
do I need to bridge the network connections or do I need to enable ICS?
I did not find any option for creating a bridge in windows 2000.
I tried to enable ICS but could not get it enabled.

I tried the same thing in my windows xp machine with the same settings but I got the same error.

What exactly do I need to do to connect my dsi to the internet,either with windows 2000 or XP?
Waiting for your replies...
Thanks in advance.