Depends on if you have the tools to do the install, if you dont, just take it somewhere.
What you'll need:
C-clamp
15 & 17mm sockets/ratchet
Grease - for caliper bolts
Antiseize - i recommend for when you reinstall the rotor screws
Hammer - beating off old rotors
Wire coat hanger or similar - holding caliper
WD40 or PB Blaster
Torch
Impact Drivera and a philips screwdriver
Brake Cleaner
Basically it goes like this-
Jack up car, remove wheels, remove caliper and bracket and use the coat hanger to hang caliper from the suspension or something so you dont break/stretch the brake lines. Now the fun part, getting those little screws out. Sometimes they come right out, sometimes they need a little persuasion. Spray those suckers down w/ the WD40 or PB blaster. Try the screwdriver first but dont strip the threads if it wont budge. Bust out the torch and heat em up real nice, put the flame directly over the screw and work a circular motion around it. Get your hammer and impact driver. If you've never used one of these it works like this..
Put the impact driver w/ the philips head on the screw, hold on tight, hit it as hard as you can w/ the hammer. The impact of the hammer, the driver, lubricant, and heat will work the screw loose. If they're in there good n tight it will take awhile. Once you see it starting to turn use your normal screw driver to finish. Put some antiseize on the threads before you reinstall them w/ the new rotors.
Pull the old rotors off, put the new ones one, spray them w/ brake cleaner and wipe them down. Install pads to caliper bracket, install bracket, remove cap on brake fluid resevoir, use c-clamp to push piston back into caliper. Reinstall caliper w/ new grease on the bolts, remember the one w/ the black tip goes on top.
Same thing for the other side. Make sure you put cap back on the brake fluid resevoir when your done and torque your wheels to 80ftlbs. Pump the brakes a few times before heading out and drive easy the first 500 miles.