"Static" vs. "dedicated" IP address
I recently contacted a hosting provider (http://www.muchhost.com) as a potential customer, and one of my questions was "Do you provide static IP Addresses?".What I'm looking for is someone who will provide a unique IP number mapped to my URL that doesn't change from session to session. I think, in hindsight, I really meant "dedicated" IP Addresses.
Their response was, yes, they provide static IP addresses, but not dedicated addresses for sites they host. They also said that Windows hosting works differently in that regard from Unix hosting (They use Win2K exclusively).
Can someone explain "static" vs. "dedicated" IP addresses?
Also, is it possible to briefly explain, without getting too technical, how Windows hosts treat IP Addressing differently from Unix?
Thanks.