Basically, yes. The best solution is probably to get a desk with adjustable height. A couple of my friends have them, and swear by them. They're a bit pricey, but I might get one anyway. (Do a web search on "height adjustable desk" for some options.)
Incidentally, being able to experiment with your work environment like this is yet another reason not to work in a 'normal' job. Not too many offices would let you get away with a standing desk, and if your desk is publicly visible the social cost of being the only one standing could be significant.
I did it once. Worth doing! I was coding at someone else's house and they had a standing desk and sitting desk. I was at the standing desk all day, partly out of necessity and partly out of curiosity.
By the end of the day, my feet were a little sore and I was a little more tired than otherwise, but I felt more active while I was doing it. I would like to try it again before committing to a new desk, however. Now that I've been reminded of it, I'm already thinking of how I can try that at my place.
I keep wondering if I could rig up a work environment where I'm lying flat on my back, on the floor, with an LCD panel mounted far enough above my head that I won't hit it when I get up.
The big show-stopper, as far as I can see, is that I can't touch-type so I'd have to mount a keyboard somewhere roughly above my neck or chest where I could see it... but then I think my arms would get tired quickly.
I have an adjustable height desk from Ikea that goes from sitting to standing with the touch of a button. It has a little electric motor that moves the entire desktop up and down. The motor system is just a different base for their GALANT line of modular desks, so you can configure it any way you'd like. By far the least expensive adjustable desk that I've seen...
Desks with adjustable height are great. Being able to change positions throughout the day is well worth the cost. Long work sessions are far more comfortable since I began using one.
Incidentally, being able to experiment with your work environment like this is yet another reason not to work in a 'normal' job. Not too many offices would let you get away with a standing desk, and if your desk is publicly visible the social cost of being the only one standing could be significant.