You could use a change_event macro to do as desired.
If desired, send your file to my address below. I will only look if:
1. You send a copy of this message on an inserted sheet
2. You give me the newsgroup and the subject line
3. You send a clear explanation of what you want
4. You send before/after examples and expected results.


--
Don Guillett
Microsoft MVP Excel
SalesAid Software

"Hickory" wrote in message
...
I am trying to set a value in several cells when a single condition is
true.
For example, if A1 = B1, then I want to set all cells C3, D3, E3 and so on
to
a given value. For instance, when IF(OR(A1<0, B1<0) ... ), I want to set
a
bunch of cells to zero. (I realize I can put an IF in each of the target
cells, but this seems there should be an easier way.)

Many thanks for your help.