Ok here we go...
First download XVI32:
http://www.handshake.de/user/chmaas/del ... /xvi32.zip
Unzip only the executable XVI32.exe to your Desktop (the rest of the files is not needed).
Open it.
Click File, Open and browse to Login.dat located at the game folder (where Login.exe is).
Now, press Ctrl+F and select 'Text String'.
Search for 'game.ryl.com.my' (without the quotes)
It'll look like this:
http://img160.imageshack.us/img160/8734/hex15fn.png
Then place the cursor on the 'g' and type your IP address.
For example:
http://img160.imageshack.us/img160/5485/hex22ev.png
And dont forget to add 0's after you typed your IP like this:
http://img160.imageshack.us/img160/5461/hex30re.png
File, Save.. and DONE!
(BTW this is for the Malaysian 533 version of RYL, but in all other clients its located at the same HEX address )