Wireless network Setup - Cisco 1200 series

[zarkon4]

I have 3 Cisco 1200 Series Access points, I have figured out how to set two of them as repeaters to the third. Problem is the location of each will be out of range from each other. I need to configure them up so that when a client moves to various areas of the building (it's a large building) they stay connected. I need the clients to see 1 access point or wireless network. Can someone point me to the direction I need to go to accomplish this?
I have been trying to find info on doing this and I am just getting confused.

 

[zarkon4]

Never mind I figured it out.
I configured each of them as an access point using the same SSID. I then configured 1 to use channels 1-4, then 1 to use
channels 5-8 and the last to use channels 9-11. My mobile device now roams correctly.