2 things:
You say you only have one lyrics screen- to get a second lyrics screen see the second post in this thread -->
http://www.karaoke-forum.com/viewtopic.php?t=16381 However do not make the 2 ".ini" files read only at this point- wait to do this (if at all) until everything is just as you want.
Then once you have 2 lyrics screens do this: In Winamp select "Options" - "Preferences" then under "Plug Ins" select "General Purpose"
Double click on the plug in named MP3+G Plug-In (gen_cdg2.dll) and change the "Full Screen Monitor" box to "Display 2"