If your setup works in retail, it will work for 95% of classic. The only differences I noticed were GCD and macro specific. Those aren't particular to any multiboxing software/hardware. And, like retail, macros and addons that work for solo players will work for multiboxers with the proviso that you will need to tweak things for optimization within your particular group setup. Like we always do. We aren't reinventing the wheel, here.