# Automatically start a webbrowser to http://localhost:$CFG{'MYPORT'}
if($0 =~/.exe$/i){
    system("start","http://localhost:$CFG{'MYPORT'}");
}
[download]

That won't work on Linux, *BSD, other Unixes (and yes, .exe is a legal file extension for a perl script on any Unix).

The following code fragment correctly identifies Windows, and also starts the web browser if you run the bare perl script:

if ($^O eq 'MSWin32') {
    system("start","http://localhost:$CFG{'MYPORT'}");
}
[download]

Yes... a typo... should I fix the text or leave it in?

You could use <strike></strike>.

Alexander