Routing to Internet via PX 506 - Need so help...

Ok this is what is happening....

Office 1 - Branch office running IP adress 10.44.5.0 / 255.255.255.0
Office 2 Main office running IP address 10.44.0.0 /255.255.255.0

Office 1 + 2 are connected via a Cisco 1600 and a lease line with a 2600 router the other end.- Then a Pix 506 before it goes out to the internet..

I have to change Office 1 to IP address 192.168.5.0 / 255.255.255.0 but they still must have access server at the Main branch.

I have already added secondary IP addresses to my Cisco routers Ethernet and Serial ports and I can ping from ethernet ports on the Cisco Routers - So..

Cisco Router at Main office eth 0 192.168.1.253 can ping Cisco Router at  branch offce eth 0 192.168.1.254..

Now on Sunday I  setup a Windows 2003 server with DHCP scope for the computers at Branch one with IP address range 192.168.5.1 - 192.168.5.50 - the server will also be a DNS server.

I can connect any where I like with the internal network but once not when I try to access the internet - I can ping 2600 from office 1 but I can't get to the 800 or the internet which are the over side of the Pix..

office 1 --------- switch---------Leased line-----------switch--------office 2 (10.44.0.0 ---- Internet
 192.168.2.0          |             |                   |                     |                    |                   |         |     |
                              ----1600                    --------------2600                ------Pix 506         800

I am guessing it's because I don't have route inside entry for the new network...

I have attached the PIX 506 config in a Text file...

500 pnts..

pix-s.txt