What equipment and how much money I need to create my own web hosting company?

It would be very nice if you could tell me what exactly I need to create a web site design company / hosting company. I want to design web sites and host them. What hardware and software I need? And how all these things costs? Thanks you!

I'm slightly confused as in your title you have "web hosting company" and in the post "web design company"? What exactly do you plan to start?
If you need web hosting company, the best idea is to get a white label hosting package plan and a decent site. You may use a template, however, i wouldn't recommend you to do it, as a professional web site will pay off handsomely later.

You may find beneficial reseller deals on onthespothosting.net site (they are running a special at the moment) or webhostingbuzz.com (with easy website builder you may use to create your site)

As far as I understood you want to start te company that provides only web design services. Right?

Hosting and designing websites are two totally different things.
For designing/coding you will need good imagination, a lot of time and skills in Adobe Photoshop, Adobe Dreamweaver and maybe some others.

For hosting the websites you will need a couple of VERY good server computers, a really fast internet line, and some programming/installing skills and understanding about unix systems.

Hope that helped

If I've got you right, you are after a white label hosting, so any company with custom-branded servers like ahosting.biz will do, that's what say
If you don't like the idea of shared hosting reselling, I suggest you trying dedicated hosting reselling where it will be up to you to support clients. And also insist on your buying at least 2 dedicated servers.

What is the peculiarity in Onthespothosting.net special reselling package plan?