How to make a script that just copies

Hello all, im new at this and need your help.

I want to make the installer to just see files from a data dvd and to copy-install them to the hard disk. I dont want the files to be included in the setup.exe.

The reason is that the data are more than 2GB and when i made the install with the wizard help of hmnis editor the setup.exe was 2 gb and couldnt be loaded due to size.

thanks