2002 Driver side Electric Window not working
 

The other day I went to roll the window down and it didn't move. I pressed the button again and it made a weird click within the button itself...almost like something under the button was out of place. Anyway, I rolled it back up no problem. The next day I went to roll it down again and nothing.

I'm assuming my motor is bad or something. Can anyone tell me where it is and how hard it is to replace. I'm not a mechanic by any means, but seems like something that should be fairly simple.

thanks!