You should really invest a few bucks and get yourself a Honda Owners Manual for your CR-V. Check your dealer. Oftentimes they will have older copies of manuals around the office that they will sell you fairly cheap.
SRS (Supplemental Restraint System) or Air Bags. The light is on because there is a problem with the system. Take it to your dealer. This is not a DIY repair. I had the same problem with my 2004 CRV...