Script Limit the number of downloads per client. Need Help

Hello, was using the script and I have some problems.
I have some large files on the site, the script to work properly, exactly where I can implement the code: set_time_limit (0);?
It may be as below?  in dl.php:

$ DL = true;
)
if ($ dl) (
set_time_limit (0);

are correct?

Another problem is that when the script directly access the browser eg www.mysite.com/dl.php he asks to save it, putting at risk my data source and the code of the script, how to fix it?

Thanks.

Hi,

first check this thread first:
http://www.webdigity.com/index.php/topic,7494.0.NEW+Support+forum%21.html

set_time_limit (0); is just a setting that will disable the default time limit in PHP

your link is broken or what do you mean with

Another problem is that when the script directly access the browser eg www.mysite.com/dl.php Visit through proxy he asks to save it, putting at risk my data source and the code of the script, how to fix it?

do you see all code? if yes your hosting account doesn't support PHP