This is about one new uncut transponder key.
You will need to take your actual working key with this new item to a professional locksmith shop or the dealership to get it cut to fit your car's locks.
Once you have the key cut, you'll need to get it programmed to your car.

That could be done by yourself. With the item you'll receive the programming instructions. Is a very easy procedure you can follow step by step. All you need to have is two original factory working keys to do it.
If you don't have two original working keys, you will need get this new key programmed at dealer or professional locksmith. 

Keep in mind that once you get this new key programmed, you'll be able to use it with your old working key to program more keys yourself.

It fits:

(2001-2003) Chrysler Voyager

(2001-2003) Chrysler Town & Country

(1998-2006) Chrysler Sebring Convertible

(2001-2006) Chrysler Sebring Sedan

(2001-2005) Chrysler PT Cruiser

(1999-2004) Chrysler 300M

(1998-2004) Chrysler Concorde

(1998-2001) Chrysler LHS

(1999-2000) Chrysler Cirrus

(2000-2005) Dodge Neon

(2002-2005) Dodge RAM 1500

(2002-2005) Dodge RAM 2500

(2002-2005) Dodge RAM 3500

(1999-2006) Dodge Stratus Sedan

(2001-2004) Dodge Dakota

(1998-2004) Dodge Intrepid

(2001-2003) Dodge Caravan

(2001-2003) Dodge Grand Caravan

(2001-2003) Dodge Durango

(1998-2006) Jeep Wrangler

(2002-2004) Jeep Liberty

(1998-2001) Jeep Cherokee

(1998-2004) Jeep Grand Cherokee

(1999-2000) Jeep Breeze

(2000-2001) Plymouth Neon

(2001-2003) Plymouth Voyager

(2001-2003) Plymouth Grand Voyager

(1999-2000) Plymouth Breeze