NAT CONFIGURATION IN WINDOWS 2003

SIR ,

I WANT TO KNOW THE NAT CONCEPTS AND HOW
ITS WORING AND SHARE THE DETAIL I THINK THE FUNCTION OF THE NAT TO TRANSLATE THE SINGLE IP
AND SPLIT THE IP IN TO MANY HOST TO SHARE THE INTERNET SO I WANT TO KNOW IN WIN 2003 WILL SUPPORTS HOW MANY CONNECTIONS IN THE SINGLE DOMAIN AND HOW THEY WILL TRANMITTE THE SPEED OF THE INTERNET AND EACH HOST HAVE HOW MUCH SPEED