1999 Honda Accord Q&A

1999 Honda Accord Question: i just change the ignition swich cilinder with a new key but wont stard

i dont know if the key has a chip please help me -
Answer 1
see previous post -
Answer 2
http://www.hondaaccordforum.com/forum/general-tech-help-7/1999-accord-duplicate-key-35449/ -
Answer 3
IF you have your old assembly , I can tell you what to do!!! Just reply???????????? -