Hello,
I have the problem if I want to add for example the rate that topic mod ( http://custom.simplemachines.org/mods/index.php?mod=1313 ) manual to the theme BlackRainV.2 ( http://custom.simplemachines.org/themes/index.php?lemma=348 ) I don't find the place of the code where I have to replace. I mean I make a search for that piece of code in that file and it doesn't exist.
Search for a comment around it, the theme may have changed it a bit :)
Otherwise, ask the theme author :)