I've gotten into playing Minecraft and using the Technic Launcher, but when i found out i needed a 64-bit Java in order to access more that 1.5 GB of memory on my launcher, i searched everywhere in order to find out how to get 64 java on my 32 system.
Added (1). You can also say if its possible to take a 32-bit OS and have it upgraded to 64-bit and/or if you can somehow add 64-bit along side 32-bit.