Actually, the configuration file edit (described
here) is easier than using the hacked executable, and will do the same thing. Without the CD you will not be able to get past the blessing ceremony, though the end of the game is pretty much straight hack and slash, so that may not be a big deal.
In any case, your friend should replace the CD (the game is still available from Amazon, eBay, etc, and there was a DVD version released in Australia about a year or so ago).