Word 2002 and NT 2000

Are there any known problems when using Word2002 and NT2000 with Delphi?

We are still using the WORD_TLB for office 2000.

What happens is, an xDoc.SaveAs(DocName,EmptyParam,Empty...), call may or
may not save the document. With a fresh system, this call will work a few
times, then fail to 'SaveAs'.

The above works flawlessly on a Win98 system, and memory testing shows no
leaks for this process.

Thanks in advance.