Magento-ecommerce small business make money resource

What is the best Script , Software , CMS or Control Panel to run professional free / paid web hosting comapny like (Bravenet.com & tripod.lycos.com )
are there any better ones out there?
Anything else that i may need to know , would be greatly appreciated.
thanks a lot for your time

I’m trying to a find a web hosting company besides the one that the company recommends because they charge too much. And so far, I learned the hard way that Yahoo does not support it. What do I need to look for?