tar from a disk (not tape)

[Gill E. Fuchs]

i have in my directory a file named  gugu.tar  which i assume is
a tarfile.

now, what i would like to do is restore it unto my directory

in my feeble attemp to do so i tried:
        tar x gugu.tar
to which i was wipped with the response:
        "yo, no tape on line" {translated a bit}

so, what to do?

gill
deep within the tar pit