Hello guys...i'm using celcom bb for online gaming with my ps3...some method i change from what bro borneo give to us...

method to do an internet connection sharing (ICS) on PlayStation3 for XP computers

First off u will need a cross cable for the connection - i using straight cable for connection

1. Connect the cross cable from ur pc to your ps3
2. Go to control panel > network connection > right click  property on ur modem (this could be ur phone modem or USB modem)
3. Advance > click ICS option then click “allow other users to connect throught this computer” 

4. Then after this click the drop down menu that give u choice which line do you want to sharing.
example: 1. Local Area Connection 3 (for ur usb modem)
              2. Local Area Connection 2 (for Network Card)
              3. Wireless Connection
then i click for Local Area Connection 2 as output from my laptop to ps3. its give you auto ip 192.168.0.1 and subnet 255.255.255.0 for ur Network Card.
When u connect ur Network cable to ps3, its give you auto ip for ur ps3 (DHCP).
i also disable my firewall that maybe give problem for ur connection.

5. Click these item in the box in the options
UDP
DNS
HDCP
HTTP
HTTPS
DHCP (for auto IP)
That’s it! ur done on the computer side.

now for the ps3 part

1. Go to network setting
2. Then select internet connection setting
3. They will ask u to select a setting method, select custom
4. Next they will ask u to connect wired or wireless connection, select wired
5 from here, select these bellow:

Operation Mode: auto-detect
IP Adress: automatic
DHCP Host Name: Do not use
DNS: Automatic - i using manual for open DNS 1. 268.67.222.222 and 2. 268.67.220.220
if i setting auto of coz it will be difficult to sign-in PSN (if you got this problem)
MTU: Automatic
Proxy Server: Do not use
UPNP: enable

Once all this is done, there is nothing to do but to Sign IN and play online! hope it helps guys! 

but you got NAT 3 for this connection...but seems my area no really okay with celcom bb so this the best method i try

anyway...the info bro borneo give really important and useful coz we can try many method in connection.

use this dns

primary : 4.2.2.1
secondary : 4.2.2.2