The first upgrade done to the downstairs bathroom (other than new tile floors) was to remove the pedestal sink and replace the vanity and faucet. I don’t have any pictures of the process but it is pretty simple. First you want to turn off your water. Then disconnect the supply lines and the drainage lines. Make sure you have a bucket handy to catch the water that will come out of the drain!
Then you can pull the old vanity out and install the new one. Then you just reverse the process and hook up the drainage and supply lines. Stop the sink fill it up and check for leaks (three times!). Make sure to read the directions that come with your new vanity and faucet.
We had to move one of the support bars in the back of the vanity because it was in the way of the plumbing coming out of the wall.