It's been a while since I last used my lab CRS. In the meantime we moved it to another net but I managed to get it back to running state - the only problem remaining is logging in.
Searching online I found the following document from Cisco, which refers an older CRS version and CCM version (I'm running 4.2.3): http://www.cisco.com/en/US/products/sw/custcosw/ps1846/products_tech_note09186a00801d6e61.shtml
If I follow this guide, the CRS won't start anymore and I get an error about a missing file (just the file I renamed). I noted that in that file, the password seems to be present but in encrypted or hashed form.
Either way.. is there a way for me to restore the admin login on CRS? I do have full access to the underlying Windows box and of course the call manager.