Ok here's what you do
1: Mount Disc 1, and run the install using the 'Setup' Icon
2: Somewhere during install it will ask for Disc 2
3: Mount Disc 2 and finish install
4: Unmount All Discs
5: Go in to the Crack Folder
6: Copy both the files and
Paste in your Game folder (yes replace the exising file)
7: Enjoy the game
Walkthrough - if anyone needs it - http://www.gamefaqs.com/computer/doswin/file/919015/37346
Here's a CG for all to enjoy ;)