How to setup Mikrotik v.10 basic working unit

1st time user.
I have a problem, I can't make it worked. this is my situation.

PC unit :
NIC 0 Realtek lan card built in motherboard dg31 intel
NIC 1 Dlink Lan card

Modem DSL :
202.164.168.82 ( IP from ISP )static
255.255.255.252 submask
202.164.168.81 ISP gateway
203.167.97.66 DNS1
203.167.97.200 DNS2

Mikrotik unit config

Address network broadcast Interface

0 192.168.1.99/24 192.168.1.0 192.168.1.255 LAN
1 ????????? ????? ?????? INTERNET

Setup: Model DSL -----> Mikrotik PCRouter -----------> Hub/Router Dlink wifi
202.164.168.82 192.168.1.99/24 LAN 192.168.0.101 - .199

My question is, do I need to get an new Public IP for Mikrotik ? to be able to work?
since 202.164.168.82 the being used by ISP DSL provider.

Please help if ..

fastlove
IT TEch