PhotoImage problem

[jimgardener]

hi
I am using Python 2.5.1. In my code i want to use
self.myimage=PhotoImage (file=self.myfile)

so i can create the image in a canvas
self.mycanv.create_image(70,100,image=self.myimg)

it works when i add,
from ImageTk import PhotoImage

but this import caused an error message when i tried to run this in a
friend's linux machine that had python and PIL. Is PhotoImage part of
standard python library?In new versions of python do i have to modify
this import statement in anyway?

thanks
jim