Found this really detailed post and reply on ambidexterity with mad links. In summary: pretty much use your less dominant hand at all possible times. Opening doors, makin’ a sammich’, surfing with the remote, opening doors, putt the mouse on the other side of the keyboard. I tend to let my right hand rule over the keyboard, so I let my left hand do it. You know what, I’ve been doing this for 3 days now and it’s starting to work. My left hand is more confident it doings now that it (or rather my right brain) knows that it can. I find my left hand immediately dominanting small tasks I’ve trained it to do: it controls the mouse and the tv remote and goes for the dorrknob first. Of course, my handwriting’s still shit-think about it: one hand had 23 yrs of constant training and the other absolutely none-, but I plan on buying some 1st grade handwriting workbooks. It’s the same basic probelm of fine tuning movement that little kids have, so I say do what their doing :P I’m so happy! I’m an artist and this if releiving my right side of sooo much extrenuous overworked pain from writing class notes at 80 mph and almsot 24 hr use on the keyboard.
BUT I am not checking this off of my list until i can write equally. I’ve set the bar there. It’s going quite well. I mean we already know how to write , it’s just a matter of relaying it to the other side and strenthening it to do so.

http://answers.google.com/answers/threadview?id=316924
http://www.madsci.org/posts/archives/apr2001/986435387.Ns.r.html
http://ergokomfort.com/catalog/comfort_keyboard_systems_3932753.htm

PS: I’ve noticed that since I moved my mouse to the left side of the keyboard, my left hand has “caught up” witht my right hand and am typing off the homerow equally dominate and with much greater efficiency. I ‘ll be damned!