Having just done my own forks while I did my steering head bearings, I can say that it's actually quite easy removing the front wheel, fender, brakes and forks altogether, and it made it a lot easier to handle everything. Also it's prolly a great idea to renew the fork oil, and it's a lot easier to drain the old oil completely from the top with the forks removed and stood upside down.
If you decide to not remove the forks, when you have the bike on its center stand, be really careful when lowering the front with the jack like Mark said, as it's very easy to go past the forward balancing point and have the bike fall forward off the stand!
Also, if you go that way, remember you must loosen the top yoke pinch bolts before attempting to remove the fork caps.