I did the following:

1. copied data from a text file
2. pasted it into column A in EXCEL 2003
3. used DATA/TEXT TO COLUMNS to parse it into multiple columns

It all worked fine.

I then went to past additional data in and EXCEL immediately converted it
into multiple columns using the TEXT TO COLUMNS criteria. Nice feature, but
that is not what I wanted to do. How can I shut this off?