With luck you won't encounter any problems, but FWIW, there have been
reports of new limits imposed in Word 2002, but it has always been difficult
to pin down what they are.
One issue is the connection method used - with text files in Word 2000, Word
would either use its internal text converter or ODBC, partly depending on
what is installed on the user's system. In Word 2002, Word might well use an
OLEDB method which may have a 255 limit.
Another issue may be the size and "complexity" of the data. When Word
connects to text data these days, it /may/ try to detect the text encoding.
I think it probably uses standard WIN32 routines to do that, and they use
various heuristics which (by the nature of heuristics) do not always get it
right. You may find an encoding dialog popping up in some cases. There's an
article about that at
http://support.microsoft.com/kb/290981/
Peter Jamieson