Did you extract the file to the RA2 DSL_TC folder, or did you unzip to the components folder in RA2 DSL_TC folder?
It needs to be unzipped to the Components folder. OR if it unzipped to the main folder, then just move it to the components folder. There should be a folder named lt_tooth with a maps folder inside, the .gmf file, and a preveiw .bmp. ALSO there should be a lt_tooth .txt file.