User Activity

I wont to know if an EOS IX lens will work on a Rebel XS?
50-200 F3.5-4.5 (58)  will this lens made in 1987 work on a Eos XS camera?
I wnat to know if the Shutter Button can work in Basic Zones and not in Creative Zones?
If anyone has a copy of the software I need a copy for I have lost mine and need the disk or disks!