Question : Lost Internet connection from LAN, network with IPCop firewall and SBS2003

Hello all experts.  
I would aprreciate if you can help or give me advice/ideas/insights.  I am very urgently in need of help.  tHANKX IN ADVANCE
On our network, we have IPCop on the firewall which is DHCP server between the Cable-Router and the switches then SBS2003 Server.
 ZyXel Cable-Router ---> (IPCop) Firewall ---> Switches ---> 1-NIC Server & PCs
All client PCs and server get "Page cannot be displayed" errors when browsing.  The LAN can not access the Internet.  

> At the router: 192.168.1.1, 255.255.255.0
 DNS: 24.28.99.62 and 24.28.99.63

> Firewall (Ipcop):
 Red eth1: 67.78.76.185 | Green eth0: 67.78.76.186 (255.255.255.252) with NAT to LAN 192.168.46.x ( 255.255.255.0)
 
 I can ping any website or any itnerface from server.
 The regiistry from server showed ISP' DNS IPs as forwarders:
> Key Name: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters
> Class Name: DnsRegistryClass
> Last Write Time: 8/28/2006 - 12:00 AM
> Value 0
> Name: PreviousLocalHostname
> Type: REG_SZ
> Data: SERVER1.furnace.local
>
> Value 1
> Name: BootMethod
> Type: REG_DWORD
> Data: 0x3
>
> Value 2
> Name: AdminConfigured
> Type: REG_DWORD
> Data: 0x1
>
> Value 3
> Name: Forwarders
> Type: REG_SZ
> Data: 24.28.99.62 24.28.99.63
>
> Value 4
> Name: ForwardingTimeout
> Type: REG_DWORD
> Data: 0x5
>
> Value 5
> Name: IsSlave
> Type: REG_DWORD
> Data: 0
>
> Value 6
> Name: RecursionTimeout
> Type: REG_DWORD
> Data: 0x5
>
> Value 7
> Name: RoundRobin
> Type: REG_DWORD
> Data: 0
>
> Value 8
> Name: EventLogLevel
> Type: REG_DWORD
> Data: 0x7
>
> Value 9
> Name: ListenAddresses

 Type: REG_SZ
 Data: 192.168.46.10

 Value 10
 Name: enableednsProbes
 Type: REG_DWORD
 Data: 0

 On IPCop box:

 eth0 Link encap:Ethernet HWaddr 00:60:08:CA:EA:41
 inet addr:192.168.46.1 Bcast:192.168.46.255 Mask:255.255.255.0
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:332684 errors:0 dropped:0 overruns:0 frame:0
 TX packets:307648 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:98920353 (94.3 MB) TX bytes:48789351 (46.5 MB)
 Interrupt:5 Base address:0xd400

 eth1 Link encap:Ethernet HWaddr 00:E0:18:3A:6E:59
 inet addr:67.78.76.186 Bcast:67.78.76.187 Mask:255.255.255.252
 UP BROADCAST RUNNING MTU:1500 Metric:1
 RX packets:270372 errors:0 dropped:0 overruns:0 frame:0
 TX packets:267467 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:40484943 (38.6 MB) TX bytes:92804664 (88.5 MB)
 Interrupt:10 Base address:0xd800 Memory:f3800000-f3800038

 lo Link encap:Local Loopback
 inet addr:127.0.0.1 Mask:255.0.0.0
 UP LOOPBACK RUNNING MTU:16436 Metric:1
 RX packets:1069 errors:0 dropped:0 overruns:0 frame:0
 TX packets:1069 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:0
 RX bytes:52778 (51.5 KB) TX bytes:52778 (51.5 KB)

Answer : Lost Internet connection from LAN, network with IPCop firewall and SBS2003

With the current settings you have on the server you should now be able to browse the internet. is you firewall not blocking the  port (80, 8080, 8000) for the internet.
Do you have a proxy server?