www.pronto.philips.comnavigate to the downloads and sign up for an account (you have to log in) then download the newest version of PENG.
The emulator is a component of the editor. (you will get a CD with the Pronto, but you need to insure you use a version of PENG matching the firmware version on the Pronto you receive, i.e. the PENG download is probably newer than the one on the CD)