2004 Accord Key Code?
 

I have a 2004 accord with 2 keys which both have the door locks etc attached. I paid $65 for a spare and $25 to have it cut.Now they want another $ 100 to have the key programed to start my key. Please tell me if this is neccesary or can I do it myself like I could on a new Lexus or ? Thank you guys