Basically, download the file that is here:
http://www.savefile.com/files.php?fid=1803367
Then, you will need winrar to extract the file.
You can get Winrar at
http://www.rarsoft.com/download.htm
Then extract the file in your ro folder.
Make sure the ReLoader.exe and the 3 other files are 'in' your RO folder.
Also make sure they didn't create a RoLoader folder in your RO folder, if they did, go in the RoLoader folder, select the files, cut, paste in your RO folder.
Once that is done and ReLoader.exe is in your RO folder, click on it. It will ask you if you want to patch Ragnarok or Sakray, you will select 'Sakray'.
After that press 'ok' and it should patch by itself.