Hello,

I am already doing this and I can tell you it is very easy. I will tell you how I am streaming live events on a website:

Software: I am using BlinkoTV.com - I can download the broadcaster for free and I am paying only a monthly fee for getting the live feed from them.

Hardware: Computer with Windows XP, as a video source I am using a Vixia HF 10 camera model, microphone (this depends on you what you will get - it works with the simple models also), video card Asus EN9800 GT.

PC requirements:

-Microsoft® Windows® XP Service Pack 2 or
higher or
-Windows Vista (any)
-Intel Pentium® 3 or compatible processor;
933MHz or higher; (minimum)
-Intel Pentium® 4 or compatible processor;
3GHz or higher; (recommended)
-256MB RAM minimum; 1GB recommended
-40MB hard disk space
-1024 x 768 Screen Resolution with 32 bit Color
Quality
-Microsoft DirectX End-User Runtime version
9.0c

If you want to know more than this just reply to this thread