Contents of four CD's

Okay, I have four cd's from the Baldur's Gate Shadows of Amn game. I've let my brother borrow the game and have yet to collect it and I kinda want to play it now. So I had him copy the contents of each disk, zip it up and send me the four designated zip files. I unzipped all the files, put them in 4 designated folders renamed after each cd 1-4.

I open folder "CD 1" and start up the setup, it begins the install and asks me to put in disc 2. So I browse the prompt over to "CD 2" and it immediately asks me to insert disk 3. At this point it just continues to ask me for the next cd and it never installs.

I wonder if I'm doing something wrong, I've managed to install software like this however it's become a problem. Anyone have any idea what I can do to fix this problem? Any help would be appreciated, I just want to play the game already, hah. Thanks in advanced.

 

Sorry, but this is a question about illegal disk copies ( I know its an oldl game, but it still applies) and our forum rules dont allow assistance. Sorry