Firewall/NAT

I have a huge problem.  I have installed m0n0wall, 3 interfaces (LAN 192.168.0.x), (WAN, 75.x.x.x) -public, and (DMZ 10.10.10.x).  I can get out to internet from inside.  and from the the "outside" I can get to my web servers, mail and VPN. 

however internally, i get every internet site except my own!

this happens from both my DMZ and/or LAN i cannot surf my websites.  What the heck?  Sounds like a DNS issue.  Can anyone assist. 

We open for business tomorrow, and we need have user surf our websites for day to day operations, but as of now internal users
cannot surf our own hosted sites, but i repeat external users get to the websites just fine.

This is a limitation of the networking with monowall.  you cannot access the NAT'd services using the external IP address from the LAN.  Read this

Hope this helps.