IF you want to do it at home, The process basically amounts to blowing hot air in the boot for 10 or so minutes and then clamping your foot in tightly until it cools. I'm not sure whether a hair dryer is warm enough.
Also, you don't need to have it done, it merely speeds up the break in process. After a few days of skiing you'll be at the same point.
If you want to do it and can bring it to the shop, then i'd do so. they can check alignment and other things as well.