jack up the car, make sure its safe etc.. undo the two bolts on the ends of the swaybar. undo the brackets. take note of which way the stock sway bar is mounted. fit the new bushes to the new sway bar. put the bent ends of the sway bar in first
i.e.
| | <- these ends
\________/
hand tighten the bolts. raise the rest of the swaybar up. put the brackets in place then tighten them up. tighten up the other two bolts which you only hand tightened. double check all nuts & bolts are tight. make sure no tools/babies/alcohol has been left under the car. lower the car.
now go find some corners.
should take you 30mins all up. 15mins of that would be jacking up the car.