Can I change the ignition switch on my crx myself and how do I do it?

See if this helps:

http://www.tegger.com/hondafaq/ignition_switch/index.html

Finally figured it out with the help of everyone's advise. I checked all the fuses but there was one that I most of over looked. After replacing the main relay, ecu and ignitor I realized that the harness for the main relay only had one wire with 12v. I found a bad fuse under the dash that powered the main relay and tested the harness, after installing the new fuse I was getting power from multiple cables with the ignition on. At that point I plugged in my original main relay and the ecu warning light would finally turn off after a few second and the car crank up with the original ECU and ignitor.
I feel like dork because I checked all fuses 3 times and could have had this car running two months ago, but you learn from mistakes some times and you guys have been very helpful.
Thanks again for posting,
dj16bit

Yeah I am having this problenm now well I thought it was the main relay and it was'nt so I had to keep my hand on the key and keep it in the on position for it to stay on. But the minute I took it off it turned off on me so I am hoping this is what it is?