Although the idea is right, the instructions for creating the record are somewhat ambiguous (sorry Marcus). This is what you need to do:
1. Open the DNS Console
2. Expand Forward Lookup Zones
3. Select "company.biz"
4. Right click and select New Host (A) record
5. Enter the name "www"
6. Enter the public IP Address of the web server
If you're not sure what the IP address is this command can help you find it:
nslookup
www.company.biz 4.2.2.4
Where 4.2.2.4 is a DNS server which belongs to Verizon.
Once you've done that you should be able to access the site. You may need to clear the clients DNS cache first with "ipconfig /flushdns".
Note that you will not be able to access the site via
http://company.biz, you're limited to the www version.
Chris