Hi,

Sorry about my mistakes in the previous post. I think I wasn't very
sucessful giving a

clear view of my problem. Here is a much clearer description of my excel
problem...

-----------

I want to use Input Box's to enter data to columns C2:C, D2;D and E2:E row
by
row on Sheet1 (where the info on column C, D and E will hold the data for
"period",

"activity" and "trainer" respectively).

On Sheet2's A4:A column, I have a list of all possible "tariner" values of
Sheet1.
On Sheet2's B3:AY3 range, I have a list of all possible "period" values of
Sheet1.

Lastly on range B4:AY21 of Sheet2, I use VLOOKUP to display the "activity"
cell info for

the matching "period" and "trainer" values retrieved from Sheet1.

So far so good. No problems. I can manage that.

But before actually accepting and "writing" the data into the columns of
C2:C, D2:D and

E2:E as rows of new elements on Sheet1, I need to make sure that the info
I'll input on

Sheet1 for each row of cells ("period" & "activity" & "trainer" values)
there doesn't exist

another row with the same data trio.

Hope I summerized it correctly this time.

How can I do it?. (With and without VBA)
TIA

J_J