It's possible customize the ccmuser? My customer wants change the Logo Cisco and put his logo.
I would just tell my customer it's impossible. If you really want to do that, there can only be two ways:
1) Hack the system and get to root shell. Once you get to root shell, it should be easy to find out the logo file and replace it.
2) Build a customized web site and use AXL to fulfill the function of CCMUser web.
Neither one worth the efforts if changing the logo is all you want.