Passenger rear view mirror (needed)

Some unkind person knocked the passenger side door mirror off my 1997 Nissan Altima. I'm first looking to see if anyone on here has an extra one they would be willing to sell me for cheap. Second, I need to know how to install it - I believe you pop off the little triangular panel on the inside of where the mirror attached, and remove some screws. Just want to be sure before I go about popping off panels. Thanks.

A few on Ebay were sold for $25.00 with shipping. Keep checking

Thanks for the heads up. I did actually find one on Ebay about a week ago - paid $37.00 including shipping. Should receive it this week, hopefully. As long as I can work the installation, should be fine.