Please explain 'it DOES NOT work' this is not enough information to even make a logical guess.

Is there an error to STDOUT?
Are there errors showing up in your webserver error log?

More information than 'it doesn't work' is needed. On a side note I would like to add that if your worried about security, this script or any other matt wright script is not the way to go. You should probably look into using the CGI mod and rolling your own solution.

-bn