Re: Moving 220 outlet
You might get lucky and be able to move the outlet from it's current location, to where it is needed WITHOUT adding wire, if there is enough slack in the wire within the wall. Open the wall and see, worst that happens is like Casey said, you add a junction box with surface mounted access and relocate the outlet where you need it. I would recommend an electrician for this seemingly simple job because that is the smart thing to do. You can do the demo and drywall repair to save yourself a few bucks.
As for doing the demo, I recommend you cut open an area roughly 2' square to expose the cavity for inspection and work. Use a straight edge, make clean cuts, carefully remove the panel and save it for reinstallation. And, as mentioned, turn off the power before doing anything.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!