OK, i'm an idiot when it comes to networking and servers. I have no clue what a server is even used for. So, with all the websites i'm running, my friend said "why not just buy a server and save yourself the monthly fees?" So i looked at the Dell Small Businesss catalog that i get and found some basic servers for under $1000. Thing is, i don't know if i even need one, and what it does. No clue how to even set it up to host a website, which i why i pay for hosting. So, can any guru give this noob some info as to what a server is, what it does, if i need one, any extra expenses to host a few websites, etc.