How to make DVD on two parts and set 1CD ask to insert 2CD....?

[Unimatrix_001]

Hi all
I have downloaded game Call Of Duty Modern Warfare here
This Is ISO File and the size is 6GB and 627MB
The problem is i dont have dual dvd(8GB)
So I need to make it become 2 DVD
I want to ask How to make it in 2 DVD
I want, Like Other CD games or Applications when Installer have finish in DVD 1 it will ask for DVD 2 ( example:" Please Insert CD2" And then The Installation will continue )
Any software can do like this?

The Example like CD on Counter Strike Condition Zero, when The CD 1 have been Installed, it will ask CD 2.

Thanks for the solution

[Rocinante]

Try asking on the warez forum where you got it?