Here's a part of what I posted on the other mic thread;
...American Musical Supply has a nice selection of lapel and other mics for the BEST prices. They offer a Nady model for $89. Nady is the originator of the wireless microphone system. If one orders $249 or more in products they offer a three month payment plan in which they deduct 1/3 of the amount from one's account each month. No sales tax unless in NJ or NV and free shipping I believe for orders over $49.95.http://www.americanmusical.com/ItemSear ... l--srcin-1
With only one mic connection and maybe a music/mp3 player to connect, only a speaker with a built in amplifier is necessary instead of a separate sound mixer and amplifier.http://www.americanmusical.com/Item--i-BEH-B205D-LIST
With this all you need is an extension cord for power, (I would get two 25') and a cable with XLR connection on one end (check whether it should be male or female) for the mic receiver and 1/4" jack on the other end to plug in to the powered speaker. The length of that cable will need to be determined as to where you want to position the wireless receiver in accordance to the speaker. If the speaker is lifted up on a stand and one has the wireless receiver below on the floor then a 10-12' cable is good.
If you want to hook up an mp3 player, a 1/4" to 1/4" line cable will be needed with a separate adapter to connect one's player on one end. Consider the length of the cable as to where the player will be situated in accordance to the speaker.
Bring spare batteries and duct tape to the gig. Tape the power connection plug to the wall where you plug in and tape the cord to the floor if it crosses where people walk if at a location like a hotel banquet room or other commercial location.
If a wider frequency range is desired for music then a larger speaker (woofer) with a horn (tweeter) is needed. The speaker linked above allows for expansion if one desires to add more powered speakers of the same type or larger speakers that are powered by built in or separate amplifiers.
One could go in to a Guitar Center just to get a hands-on feel for the basic equipment and ask questions but the prices will be higher especially with tax.
American Musical Supply ROCKS the customer service and I give them high recommendations.
Wireless receiver and mic
Power extension cord (2-25')
Adapter or power strip for plugging in more than one item
XLR - 1/4" cable for connecting receiver to speaker
1/4" - 1/4" cable to connect music player
Adapter to connect music player to 1/4" cable
Spare batteries for wireless transmitter
A "carry-on" type travel suitcase with wheels and extending handle are great to use for transporting.