Ceases

I run a slow pc from 2003, I still am able to play Roller Coaster Tycoon 2 with no lag what so ever, but when I try the OpenRCT2 mod, it wont let me because I need a 64 bit pc, I have looked everywhere and cant find a solution, if you have any, I would be great full. If not plz make a 32 bit build