Graham Jones <...> said:

An unusual request I'm doing something for the kids at the hospital unit in which I work ...... it involves putting an echo onto speech .... do any of you boffins know of a simple way to do this on a PC? Thanks chaps (that's a point - where are the chapesses?) Graham

In Windows XP it's Start then All Programs then Accessories then Entertainment then Sound Recorder. Goto the Effects menu and click Add Echoooooooo.