Dear Networking experts.
1- hamara chota sa office hai jis mein hum windows server 2003 chala rehay hein. mein is per ISA server install kerna chahta hon. is se dosri networking per koi asar to nai paray ga??????????? a

2 Hum PTCL internet use ker rehay hein aur ap to jantay hon gay k isa server mein 2 lan card honay chahiye ek internal dosra external. Muje samaj nai a rehi k in mein ip ki setting kya kerni hai. Pehlay hamaray server ki setting kuch aisee hai

ip 192.168.1.200
255 255 255 0
gate way 192.168.1.1
DNS 203.99.163.240

Dosray ki setting kya rakhon please help me in this regard.