Multiple Websites on one Webserver (only ONE IP)

Ok...
I have a Web Server running W2k Server and have IIS installed. How do i set it up so I can host multiple (different) sites off the same IP address. I only have one IP available and need several sites set up.
I tried to go into each sites properties and then on the WebSite tab and Advanced Website properties and it says that section is for Multiple sitye configuration. It wasks for IP, Port, and Host Header info.
Say I have Site AAA.com and site BBB.net... I assume i put in the "host Header info" as AAA for one then configure the other as BBB.
Doesnt work :(
Then i read and this is what teh Help says for Host Header info:


Host Header Name
For your Web server to have a domain name, you must register it in the Domain Name System (DNS). A DNS server then maps your registered domain name to your computer’s IP address, enabling requests addressed to your domain name to reach your computer.
You can assign multiple domain names, or host names, to one computer with a single IP address. If the Web site requested in the host header is stopped, the client receives the default Web site. Therefore, it is recommended that an ISP use the default Web site as the ISP home page, rather than for a customer site.Hosting multiple sites on a single computer is not supported on Windows 2000 Professional. For more information, see About Name Resolution.

What does that mean?
Is that Saying that it is impossible to host Multiple (different) Sites on One IP in IIS 5.0

If So, and my _only_ resort is to get a different IP for each site :(
Cant i create "virtual connections" with different IP's?
Like in properties of Network Neighborhood i can create additional "LAN Connections" that have different IP's
and how do i do that? ( I tried and didnt see the option for an additional "LAN" connection, only dial up and VPN connections)

Or am i missing something and way off here?  :)

Thanks M8's

Christopher

p.s. I hope i was clear...sometimes i cant explain myself well... thanks in advance.