From the root directory of your PC World Multimedia LIVE! disc,
locate/access the following items:

:/SHARWARE/StarWar/

For the Dark Forces demo, first see:
Games/Darkfor/Readme.txt

Then, access the following as needed:
Games/Darkfor/Demo.exe
Games/Darkfor/Df.exe
Games/Darkfor/Dfdemo.bat


For the TIE Fighter demo, first see:
Games/tiedemo/Readme.txt

Then, access the following as needed:

Games/tiedemo/Install.exe
Games/tiedemo/Demo.exe
Games/tiedemo/Tiedemo.bat