hello..
can som1 tell me how to connect a 3 legged toggle switch. which is the leg tat is supposed to connect to the gorund? the middle one? ive forgoten about it. plz help. thnx.

 

There's no ground pin. It's just a switch. It really depends on what you want to do with it.

The swich you've described is a single-pole-double-throw(SPDT) switch. Say it has pins 1, 2, and 3. Pin 2 is the common pin. When the switch is in one position, pins 1 and 2 are electrically connected and pins 2 and 3 are electrically open, when the switch is in the other position pins 2 and 3 are connected and pins 1 and 2 are electrically closed. That's it. Just a switch.