I remember about a year ago that i found a mod for fallout 3 which changed all the doors in game to be breakable. After coming back to fallout however, i have been unable to find the mod again. if anyone would point me in the direction of that mod the help would be appreciated. thanks

There could be a few. Some time back, I made a mod that (among other things) allowed you to http://www.fallout3nexus.com/downloads/file.php?id=9801. Another option could be http://www.fallout3nexus.com/downloads/file.php?id=1904.