He sent me a PM about this, so I will post my reply here as well for anyone else in the same situation.
Hang on there bud, there's a couple of ways to go about this. Now, what you "could" do (and this is the easiest) is simply have both sites point to the same IP and port (generally 80) and then use "host headers". What host headers do is read the incoming URL request for the desired TLD (Top Level Domain), and then brokers that traffic and sends it to the correct site. For instance, you host siteA and siteB:
www.siteA.comwww.siteB.comOn the server, you right click on each site and select properties. Then, on the Web Site tab select the advanced button. Now you will see the entries at the top that the site will respond to. You can just add each name for that particular site there, such as:
For siteA
www.sitea.comsitea.com
sitea (if using this on a LAN and you already have sitea listed in either the WINS DB or in your LMHOSTS file to point to the IIS server IP)
For siteB
www.siteb.comsiteb.com
siteb (same rules as above)
Make sure to specify the IP (it can be "all unassigned" if you want it to monitor all addresses for these requests) and port that you want to use.
Now, if you want to use IIS FTP, you will not have the luxury of host headers, so if you want to maintain these sites via IIS FTP you will need to create separate directories. You can even configure IIS to dump certain NT logons directly into their own directories on the server or on the network (like assigning home dirs in a normal FTP server). If this is needed, ask.
Another option is to setup your own DNS box to answer name server requests. If, for some reason, you *need* to host your own DNS system, then this can be done in Windows 2000 (I wouldn't recommend it, as from what I have see it can get easily saturated with replication traffic if not setup properly and/or not on a fairly strong box). You would know if you need to do this if you asked the registrar to use your own server IP as the name server (normally this would be your ISPs or dynamic service like DNS2Go or TZO). Simply run through the DNS wizard and add your primary zone (and then you might want to add your reverse lookup as well), and then assign your DNS names for each box there. At that point, once each machine that needs to be listed (and has "real", static IPs to the Internet) has been entered, you can enter the respective site in there as well. You can enter "www.sitea.com", "sitea.com", and "ftp.sitea.com" if needed into the sitea.com DNS zone. You will have to do this for your other domain name as well. Remember, this is simply a gloss-over to give you an idea of what to do in this situation, but you should make sure to read over the documentation and make *ABSOLUTELY POSITIVE* that you are up to date on patches and security templates (such as using IISLockdown/URLScan on your IIS box and/or the hisec.inf template for your server). Many people choose Windows 2000 over *nix and BSD because it's easier to get started, but never take the time to actually learn what they are doing and get burned for it in the end.
Here's one site giving a fairly simple layout of DNS for the entry level IIS admin.
http://www.iisanswers.com/articles/dns_for_iis.htmHere's another link:
http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q190008&Good luck, I'll expand up this later.