Yeah, could be a fairly straightforward macro really:
Dim r as range, r2 as range
Set r = Sheet1.range("A1")
Set r2 = Sheet1.range("A65000").end(xlup)
While r.row <= r2.row
r.entirerow.interior.colorindex = 7
Set r = r.offset(2,0)
Wend
you'll need to validate for how many rows in your version of Excel; I thought 2003 only allowed 65556 rows? Also you'll need to figure out the color you want to set the row to