I am a bit confused as I am trying to run this, too. Maybe I'm just missing something obvious and you guys can help.
I installed RA2 + YR german and patched it to v1001.
Then I copied the CnCNet4.exe into the directory and started it. After that RA2YR starts, but when I try to search for online servers it tells me that I need to install Westwood Online Components. I always thought this wouldn't be required for CnCnet4 to work (?) On your instructions website I also read that there may be errors with RA2YR and its copy protections so I tried out the Viper no cd crack and took out the cd. But still the game wants the cd when I now start the exe.
What must I do to get Cncnet4 to work with YR? Thanks for helping out!