add info to columns

["jose Bartolomei" <surfprjab@hotmail.com>]

Dear S-Plus users.

I have not found a way to add information from different columns into 
another one.
For example:
Column 1        Column 2        Column 3
abc     123     abc123


How can I do that?
Thank you very much

Happy Christmas,
Jose
Research Degree Student
London School of Hygiene & Tropical Medicine