Build phase run script in xcode for iphone??

[pMan]

I want to copy some files to iPhone's 'Documents' directory. I thought to use running scripts while building. But whats wrong here is, I want to pass parameters for path to 'Documents' directory to the script, that seems impossible. Its urgent, any help is highly appreciated.

Is there any way I can use Obj-C variables in script( Mac shell script )?
Any alternative methods for placing files to 'Documents' directory during installation?

Thanks