something like this
http://www.bhphotovideo.com/c/product/658892-REG/Voigtlander_BD332A_Micro_4_3_to_Nikon.html
you won't be able to use THAT lens, however. You need an older lens with an aperture ring (non G lenses)
nope, you cannot fix it on your own. Getting it fixed may be more expensive than actually getting a new camera.
next time, use a wrist strap to stop unwanted damage due to gravity
So... what is your favorite guitar solo piece of all time? It can be solos in songs, but I am aiming for things like Scuttle Buttin by SRV (my favorite) or Eruption by Van Halen!