z. enthalpic,

1)
Range("B3").AutoFill Destination:=Range _
(Range("B3"), Range("A65536").End(xlUp)(1, 2))

2)
Not sure what you mean. Does the formula from step 1 return different
values?

I believe a simple macro can't do it,

A macro can do almost anything....

HTH,
Bernie
MS Excel MVP

"z.entropic" wrote in message
...
Here's what I'd like to do:

1. copy cell b3 all the way down to b(n), where n is the
number of data in column a; this produces some cells in
column b with a numerical value or character;
2. copy a block of cells, e.g., b1-c2, where cell b1
would be placed in column c next to every occurrence of
the previous numerical value.

I believe a simple macro can't do it, only a VBA scipt
could, but am no expert at it...

Help would be much appreciated.

z.entropic