Button Array Interrupt

Hello this is my first post and i you someone can help me!

I want to connect 3 button (reedrelais) as Endswitches with resistors. The setup is normaly used for 5button keypad connected to Analog In.

Now i want to know it i can set an Interrupt (stop motor) and also find out which of the 3 reed is high.

When I use Rise for the Interrupt is it only working with a full rise from LOW to HIGH???

Maybe someone has a solution for my problem?!?
I want to use only Pin2 maybe one more Analog Pin if it will help to find a solution.

I hope the question is clear and i hope someone has a positive answer for my Problem!!!

Greats and Thanx

I think i found a solution!!! 8)

I2c Port expander. i will try it with MCP 23S08-E/P

http://forum.arduino.cc/index.php?topic=52764.0

Hope i will get it run!!!