Typically if there is a library called sparksoftlcd, you will create a sparksoftlcd folder under sketchbooks\libraries and copy the three files (.h, .cpp, and .txt, sometimes missing .txt is fine) in the folder. No nested folders such as sketchbooks\libraries\sparksoftlcd\sparksoftlcd\ or copying to arduino's system library folder. So which libraries folder did you copy the files into and did you create sub folders?