Click on the various choices and you can change chimp, clothes, hairstyle/hat, background and voice. With the voice, just type in what you want it to say, then pick a voice (choice of 4... not at all sure about their selection of names though.....). Click on the speak button and it will say what you typed.

Tell you what LH, just get Chongo to do it for you, he's obviously better qualified for the job!

LTS