Hey XSAL,

If you remove your inner door panel, then you should be able to use a rubber mallet to tap that door dent out...I used to do that all the time with my old truck...

I would get paint matching done at the Nissan Dealership...Prep the area out with 600 grit wet sandpaper, then you can paint it on with a brush...Wait a few days for the paint to set up good, then wetsand it again with 1000 grit wet sandpaper till it's smooth...

After that's all prepped, you'll be able to apply a coat of wax with an electric buffer to smooth it all out and make it like new...

It seems like alot of work, but you'll be much happier with your results...

Good Luck,