I need to take two large columns of data and 'interleaf' them. So, if I have data in columns A and B, I want in column C:

C1 = A1
C2 = B1
C3 = A2
C4 = B2
C5 = A3
C6 = B3
C7 = A4
C8 = B4

etc.

How can I do this?

Thanks.