What OS? Any UNIX variant and WinNT or Win2K should run as many as you could concievably want. I'm not clear on how the Win OSs do it, but any Unix variant will spawn a new process for each new program......even if it is the same program multiple times (provided there is nothing in the programs themselves to prevent such).<br><br>to illustrate:<br>You should be able to save the following snippet into two files. Start one, while it is running/waiting, start/run the other. <br><FONT FACE=monospace><br>#!perl<br>print "Waiting";<br><STDIN>;<br></font> <p> <br><a href=mailto: > </a><br><a href= > </a><br> keep the rudder amid ship and beware the odd typo