I installed Genxtoo on my xbox and downloaded the flash player or mozilla/firefox
I clicked on it and it created a directory called "install_flashplayer_6__sa"

Ian to type on the black screen in root

./flashplayer-installer and I do not know how to find the directory.

I can not install from a gui . Please help. Thanks

I am not entirely sure what your asking to do. But here are some basic commands that will help you get along.

ls -list folders and files in a directory
ls -a -list all, including hidden, files or folders in a directory

cd foldername -changes directory to that folder name
cd .. -changes to the parent directory

cp filename newfilename -copies a file to a new name or location
mv filename newfile -moves a file to a new location
rm filename -deletes a file

su -gains you root privilages