Did you mean to post your script? Because without it, your question is too general.

But if you need a general answer: just create a button using whatever html or javascript method you want, point the button to your script, have the script run your desired system command, and it should work.

However, if this is the first time you are trying to get the script to work thru the browser, then there are a lot more places this might be going wrong. Do you have webserver running? Is it configured to execute a perl script? Does the perl script have the appropriate permissions to be executed? What "system command" are you trying to run anyway?

If none of this makes sense, then tell us how far along you are and be more clear about your situation. If you don't, I fear your question will be reaped....