I?d like to produce a daily show for a niche market in the same format
as www.rocketboom.com

The difference is that i?d like to use green screen technology for the
shots with the host and do them all in my own home.

What I need to know is what equipment do I need to create 3-5 minute
shows everyday?

I already have a DV cam which will be sufficient at the moment. 

My budget is $3,000 US for the rest.

The obvious things I need to know are:

What model of used (or new) apple equipment do I need to purchase? If
I can find a used PC on eBay that?s even better.
Lighting?
Sound?
Green Screen & Software?
Editing Software

The actual hosting and website part of the problem I have figured out.

Thanks