is this helping you ?
=SUMIF(G:G;"jan-07";B:B)

"soconfused" wrote:

I am trying to sum a column with only certain dates, mean if the date in
column G is Jan-07, I want to sum column B.

....A..........B................C...............D. .............E...............F.............G...... ..........H...
92203 1 400 330.9 313.0 107.9 Jan-07 376.0
92221 1 192 191.3 186.2 11.3 Jan-07 111.0

Thanks in advance for any information that could help me.