import a dll

[vorname.nachname at mchf.siemens.de]

Hallo!
I work with windowsNT 4.0 and pythonwin.
I have a short script:
import sys
sys.path.append('C:\\WINNT40.DE\\system32')
import PythonDataLinkLayer
PythonDataLinkLayer.Sleep()
#end of script
PythonDataLinkLayer is my own PythonDataLinkLayer.dll
When i execute this line by line it is good.
When i let run the script it fails at import PythonDataLinkLayer.