hi,
hmm i assume you're talking about the motorolla tools software out of the box , well you dont need to install that to flash your phone. if you follow the guide (
http://www.e2mod.com/e8/index.php/tutorials/20-how-to-flash-motorola-rokr-e8.html) then all you need to do is install the drivers then the rsd software used to flash the phone. im guessing you wont be able to do that with a mac but to be honest i know nothing about macs and i cant say i am a fan. i would just find someone willing to let you borrow their pc for a couple of hours install the software and just flash it with the firmware found in the skinning guide. it should only take like 2 hours and is well worth the effort the default black and red skin you get with that firmware is a huge improvement on the orange 1
hope that helps
jaz