Running a TCL script from PHP

G'day, I have a TCL script that reads one line from a file (generated by a php script), checks it against an authoritive nameserver, then returns a one line value into another file. On it's own, the script work perfectly. But I'm having trouble including it in php code so that it executes during a loop. Currently, I'm using the exec(“checkdns.tcl”); I’ve also tried exec(“tclsh checkdns.tcl”); It doesn’t appear to be running. I’ve check permissions on the file and they are all correct and I’ve even tried it giving permissions to absolutely everyone to make sure. Any ideas what I’m doing wrong? Best Regards, Bob Irwin Domain & Server Admin Planet Netcom