Tue,
If you're logged into the network as user "tue", then you should be able to access the files successfully. If I remember correctly, you're using a W2K client?
It may be that the file ownerships from the Windows side have become messed up. I'd suggest that you log on to the PC as admin, check that you can access the files, and if so, go into the directory properties, select the Security tab, Advanced setting, Owner tab. Select your ID under "Change owner to", and check the "Replace owner..." box. Apply the changes, log on as yourself and see if that's fixed things....
Des Dougan