If your washer door's in the way, it's no big deal to change it over. Just note that switching your washer door to the other side only works on select front-load models. I used the Electrolux EFLW427UIW for this tutorial. The steps may vary slightly from machine to machine, so consult your owner's manual.
First, turn off and unplug your washing machine. Open the washer door all the way to show the four hinge screws.