try deleting the files you put in your root directory. that is all you need to do. if u find that take too long, then download the face packs you have again and put them in your root directory again (it will ask you if you want to overwrite the files, click yes to all). Then all the files that you need to delete will be higlighted and you can just hit the delete button on your keyboard.
root directory=c:\Program Files\EA SPORTS\EA SPORTS Cricket 2005 for most people.