You can do those two things without a macro.

For the first one, highlight the cells that you want to do this to,
then Edit | Replace (or CTRL-H) and enter:

Find what: <space
Replace with: leave blank

Then click Replace All.

For the second one you can use a custom format if the numbers are
proper numbers, otherwise you can use a formula with LEFT and RIGHT
functions to insert the hyphen.

Hope this helps.

Pete

On Aug 18, 6:39 am, wrote:
Is it possible within Excel to create a macro to manipulate the
contents of each cell in a column.

The sort of tasks I wish to do include:

(a) Remove spaces. [i.e. "ca ts 5" becomes "cats5"]
(b) Insert character at a certain position [i.e. "12345" becomes
"123-45"]

Thank you