Static Route

Can anyone help me with this issue.
I configured a Win2k as a VPN server with SP2 update, I needs to map a static route from the internal interface to my default gateway. since all dialup and Vpn clients are unable to communicate with the internet after successfully connecting. (Microsoft KB regards this to be a known issue and recommends SP2 as the fix… does’nt work for me.) gateway is OK if client is on the LAN.
Thanks