You might try hitting <F2 after clicking in a cell.
Then just hit +, and enter the new value.
--
HTH,

RD

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"Tatebana" wrote in message
...
I have to ad up in individually in cells innumerable amounts,
unfortunately I
have to jump from one cell to the other, put the cursor at the end of the
already entered formula (something like this:
67+45+2+89+7897+124457+5+2154)
press "+" and the additional amount.

Is there a Private Sub that would add the plus-sign whenever I select a
cell
and press a certain simple key?