Window glass fell inside
 

Hi,

My 1999 Protege driver side window glass fell into the door. I heard a huge pop while driving the other day, and I was trying to lower the window at that time. Since, then it is not holding it up. Could somebody please help me in understanding the problem? I researched a bit and people are saying I need to replace the regulator and it costs $200. Is that true? Is there anyway, that I could do it myself?

Thanks

Also, could you guys direct me to an online parts store for Protege. I searched around and couldnt find anything,

thanks