The Microphone Setup Wizard ships with a list of mail-order microphones vendors WWW addresses. If you wish a different list, your application should write a new help file and replace $(WINDOWS)\Speech\Speech.hlp and Speech.cnt.
The contexts used are:
232 - Buying a microphone
235 - Adjusting the playback volume
245 - Microphone is too quiet.
246 - Microphone is too loud.