Power/Integrated Amp and microphones

Hi folks,

could some please tell me how can I connect a microphone
to a regular audio amp? (Integrated or Pre/Power setup).
I am thinking to buy a 200 wpc Integrated amp. so I can
play music to groups of 20-80 people, but I need to use a microphone for various reasons, also.
Any suggestions on equipment?

Thanks in advance.
Go to a local pro audio shop, they have amps/mixers/etc. that will suit your needs. Home audio equipment is not designed for this purpose.