Internet Connection
   In order to webcast, you need a stable internet connection that provides at least 100kbs upload bandwidth
(which means dial-up connections will not work).  If you plan to have
more than one or two people in a skype call, you will probably need a
bit more than that.  You can test your bandwidth at AuditMyPC.com or speakeasy.net .  

Hardware

• Based on our experience thusfar, it is necessary to use either a desktop USB mic like this or  USB Headsets like these which have two separate inputs for the mic and ear piece. Models that have been confirmed to work include:
  • Altec Lansing AHs320
  • Logitech Premium Notebook Headset
  • Logitech USB Desktop Mic (AK5370)

  USB headsets that do NOT have the two separate inputs for mic and ear
  piece will not work and may cause severe anxiety for webcasters
  attempting to use them!

• There
  are no other fixed minimum hardware requirements, but webcasting with
  anything less than 512kb RAM or the equivalent of a Pentium 4 would
  probably be pretty difficult.

Software

Information about software used to webcast can be found in the Webcaster Kit.  Trial versions of commercial programs are available, but
as far as unavoidable long-term costs, Mac users will eventually need
to purchase Nicecast, Windows users will need to purchase Virtual Audio Cables.