Mxit - Use it on your Computer - Video Lesson
UPDATE : The method described below still works , but mxit has a new PC version using the Pidgin client here
To use mxit on your computer - you must have the following :
#1. A fast internet line. Any ADSL , 3G , Iburst or Sentech connection will do.
#2 A computer with Windows XP. It may work on other operating systems - I dont know.