We bought a E220 on Vodacom (reluctantly as we travel a lot and prefer MTN national EDGE coverage) to use on a Mac as they claim to have the drivers. The modem did not come with software, the modem is in fact self loading if you operate on Windows, however for Mac you need to download the software from Vodacom..this is all well and good except the software does not support the new Intel Macs so I had to goto the Vodaphone website to download the latest version of the software. the good news is that any potential MTN Mac user can also do this!!! However teh software had the wrong modem string in it and I had to find the modem string elsewhere to load into the Mac Modem String Library. The modem is now working on an Intell Mac with some blistering fast speeds, much better than my iMate jasJam that claims fast connections but never gets over 120....
Hope that helps other Mac users
Nick