C'est bon j'ai trouvé:
http://support.microsoft.com/default.aspx?scid=kb;en-us;1729­53

"To create a reverse lookup zone, perform the following steps:
1. In DNS Manager, right-click your DNS server, and then click New Zone.
2. Click Primary from the "Creating New Zone for" dialog box, and then click Next.
3. The Zone Name is derived from your IP network address. In the example information, the Zone Name is 58.168.192.in-addr.arpa. Type your reverse zone name (the least significant part of the IP address, and work toward the most significant part of the address). For example:

If your network ID is: Then your reverse zone is:

10.0.0.0 10.in-addr.arpa
130.20.0.0 20.130.in-addr.arpa
250.30.203.0 203.30.250.in-addr.arpa



NOTE: The syntax of the reverse lookup zone is imperative to its operation.
4. After you type the reverse lookup zone name, press Tab and the reverse lookup zone file name will automatically fill in using the zone name in step 3 appended by ".dns" (without the quotes).
5. Click Next, and then click Finish.
Creating Your Forward Lookup Zone:
1. In DNS Manager, right-click your server, and then click New Zone.
2. Click Primary Zone, and then click Next.
3. Type the Zone Name for your DNS domain. This is the domain name that is registered with Internic (<Domain.com> in the example).
4. Press Tab, click Next, and then click Finish."