Check the #NoHack site again to be sure you did everything right. I'm not 100% familiar with their script but from the syntax and error it looks as if you don't have a file in your mIRC directory (or a sub directory of mIRC). Try placing the files that you got from them in your mIRC directory. You can find this by typing the following command while running mIRC:
//run $mircdir
You can place the files in a sub directory, right click and select "New, New Folder" to create a new location for the files.
