I must apologize as this is certainly not in my realm of knowledge. I'm hopeful that someone
with that knowledge will step up and help out here, I'd sure like to see more contributors to the community. As far as your second question goes, I don't
believe you must have the 64bit version of Simba if running 64bit Windows. As a rule of thumb I've always used the 32bit version myself. I'm not sure where you downloaded your Simba from but you can pick up the newest version of Simba 32bit from
here. I really wish I could help more, but until you're able to at least get Simba up and running, it's beyond my ability.