configuring windows server 2003 to share internet

[hdamis]

Hello,
I bought ADSL and I want to share internet to all clients my scenario is :
I have server windows server 2003 with tow NIC, I renamed one to (LAN) and other to (WAN).
I connected WAN to ADSL and LAN to switch where all other pc's connected and I give LAN NIC ip address 192.168.0.1 and I did domain controller on the same server and dns,dhcp.
I shared internet without any problem by checked the checkbox on Allow other network users to connect through this computer's internet connection (ICS) .
and on the dhcp server with dns and default gateway to distribute these to all the clients .
and it works perfectly .
but the problem is when I install sp1 for windows 2003 server this option doesn’t appear and I couldn't share internet, I read in internet that I should configure NAT and I configure it but even the server itself couldn’t connect to internet .
So where is the problem, any help.
Configuring windows server 2003 to share internet .

 

[TidyTrax]

Are you using a router to connect to your ADSL Service????

Whats the full IP settings on all the hardware - ie: router, WAN NIC and LAN NIC......

HOw have you configured the Routing and Remote Access..........

 

[hdamis]

Are you using a router to connect to your ADSL Service????

-no my router is the server itself windows server 2003 .

Whats the full IP settings on all the hardware - ie: router, WAN NIC and LAN NIC......
ip address of lan is : 192.168.0.1 and it is the dns and default getway .
but ip address of wan nic form dhcp (from the isp provider) .


HOw have you configured the Routing and Remote Access..........

so easy just choose NAT and selected the wan nic that's it .