Key fob ?
 

I only got one Key fob when i bought my used 2008 Sebring convertible. I want to get another one. Do these key and fobs have to be programmed and cut by the dealer? Or can I buy one online and hand it cut then program the fob myself?

Check your owners manual. Some models/years require one working key/fob. Some require two. Programmable keys/fob are widely sold in hardware stores and big box stores like Lowe's. If you don't have an owners manual, download it from chrysler.com.