Heres what i been doing to get multi client for teh longest time
First u have to download Hex Workshop, u can go google or soething and download the latest version
Then when u have downloaded it open conquer.exe in it
when it is opened press ctrl-F then in the Type section it should b Text String, in the value, type in Fps:%d for patch 4346 and in the options it should b ASCII and on directions down
when u click ok there should b a word called "English" next to it and u should change the E to a S and save it ...THERE U GOT A MULTICLIENT!!
ill b posting other ways how to get multi from hex workshop when patches update