Addition of a number to an INT column

Hi,
I have several INT columns in a table that I need to update.
For example, in column 'aa' I need to add 2 to all of the values in that column.
I'm using Query Analyzer - what update statement should I write?Hmm - no answers - should I be in a different forum for this question?

I guess I could do:

UPDATE table_name SET aa = 16 WHERE aa = 14
UPDATE table_name SET aa = 15 WHERE aa = 13
UPDATE table_name SET aa = 14 WHERE aa = 12

and keep going like this until I have all the values updated.

Note that I've done it from highest number first, otherwise all of the data would get adjusted to the two highest numbers.

I was looking for a more elegant solution If anyone can think of one as I have several columns to update all with slightly different increases.|||UPDATE table_name SET aa = aa + 2

:D|||Of course - thank you - how could I miss it??

Woods for the trees and all...