buying english versions of rm2k3

whats RGSS? ive never heard of it.... hey, if i had bought a japanese version of rpgmaker 2003 and then developed the game in the illegal english version, would the game and the english program now be legal for me to use? and i dont think that rmxp is a load of crap, its just harder to get sprites and chipsets and such for the game to use and even though there are things that XP has that 2003 doesnt have i have grown attached to the things 2003 does have.... it just fits me better.