group or single

enter this link and choose your problem 
 http://www.fixya.com/tags/sylvania_sdvd_8730/page-22

hope it helps :)
http://www.asknumbers.com/SpeedConversion.aspx

If you lost your code and:

You are the original owner, visit this web site:

https://radio-navicode.honda.com

You will need your car's VIN# and the radio's serial #. The instructions to get the serial are shown on the web site.

If you are not the original owner contact Honda at: 1-800-909-1009 and choose option #3.
Apart from the VIN and serial # information, they'll ask a few security questions to ensure that you are the current owner. Once confirmed they'll give you the code over the phone for free.
Source(s):

I didn't use to have neighbors 2 years ago , but now when I changed my location I have an annoying neighbors in my neighborhood , I once tried to park my car in front of their building , then they started to steal some parts of it , but i didn't call the police , actually  my friend did, and then they said that i called the police , then i fought with them till they retreated :)

It cant be written in the manual , you might bring a professional for this one :)

you must take your computer to a professional , DO NOTHING ON YOUR OWN !