PIL setup troubles

[Walter Pleyer]

I'm using  Zope and I want to use TextImage. But somehow TextImage can't
find PIL.
I always get the error message:
Traceback (innermost last):
  File "/var/zope/lib/python/OFS/Application.py", line 397, in
import_products
    product=__import__(pname, global_dict, global_dict, silly)
  File "/var/zope/lib/python/Products/TextImage/__init__.py", line 5, in
?
    import TextImage
  File "/var/zope/lib/python/Products/TextImage/TextImage.py", line 12,
in ?
    import PIL.Image
ImportError: No module named PIL.Image


Does anyone know this problem, can anyone help me out here?
Any infos welcome,
Thanx
Walter