Replacing a radiator is a straight forward job.
www.autozone.com has a repair info section with photos that covers this year car and radiator replacement.
If the car has an automatic trans you will need to swap oil cooler hoses and perhaps fittings from the old to new radiator. Not a big deal just something you need to know. Ask the seller about this.
Suggest buying locally from a store having a warranty, some give lifetime. Buying a mail order radiator may be cheaper but these can be kicked around in shipping, the result being leaks. You also want to have a local dealer for recourse in case you have a problem and not need to ship it back for a replacement.
Flush the engines cooling system, use distilled water and new antifreeze that is free of silicates and borates (read label). Dispose of the old radiator coolant carefully as it is toxic to people and animals. If on a city sewer system, most allow dumping small amounts down the drain.
Once done recheck the trans fluid level as some will be lost in the replacement.