I’m not clear on what you need. If you expect an iSeries program to cause a remote PC to run a PC program, then you can run a STRPCCMD command through a compatible telnet emulator session (e.g., iSeries Access PComm). If the telnet emulator isn’t compatible, then you might be able to use RUNRMTCMD to send a PC (Windows? Linux? Mac?) command to the remote PC.
Either way you’ll need to know the command language of the remote PC. You might need to install a facility such as a rexec server to configure and allow incoming remote commands. (iSeries Access supplies one.)
However, if you simply want to display an URL on a green-screen so the user can click on it, all you need is an emulator that recognizes URLs and can react to them. (iSeries Access PComm does this.)
You can test simply by typing some URL on a green-screen command line and double-clicking on it yourself.