Hi
I have made a nice picture of a button with 4 legs.
What is what, and how do i connect it?
take a multimeter, set it to check diodes polarity (that means it should beep when you connect both ends) and put it to two legs. you should hear the beep if you press the button. you just need two legs.
regards,
Michael
wauw, i wasnt aware of that feature. Thanks
I think I have pretty much worn out the continuity setting on my multimeter doing stuff like that! 
find the part number on it
find the datasheet on google
but for me it look like a switch