In order to do this, you will need Ruby or Sapphire, two GBA's, and a link cable. When the game gets to the start up menu, press select and B. Then press A on the next screen. Next, put the link cable in. Make sure the purple tong is in the GBA with FR/LG, and the grey one is in the GBA with R/S. Press A to do the transfer. When you start up the second GBA, with R/S in it, press Select and Start on the Gameboys default screen to fix the time glitch in R/S.