@Jojoyee
Thanks for the articles, I didn't know there were such a thing as 16 bit softwares and I also didn't know that 'Windows-key' + 'Pause/Break' is a short-cut for right-clicking my computer -> Properties. The 'Windows-key' + 'Pause/Break' pop-up didn't directly tell me whether my processor was 32 or 64 bit though, found out that if you don't see the number 64, it's probably not 64 bit.
@rikmayell
CPU-Z was great, it showed me lots of stuff except AMD64, x86-x64 and EM64T, indicating that my processor isn't 64 bit

. Oh well, and I was hoping it was 64 bit.