VBA - Comparing the numeric value of two cells for changes

I have an excel spreadsheet, using only one worksheet within which I need to compare two numerical values, located 2 rows apart within the same column for a specific change in the following way (the following isn't an attempt at code, just my description of what I need):
Column 7 (G) Row 2 (B) to be compared against Column 7 (G) Row 4 (D) If Row 4 value is < Row 2, highlight in red
Then move to Column 7 (G) Row 4 (D) and compare against Column 7 (G) Row 6 (F) If Row 6 value is < Row 4, highlight in red
Repeat this process until we reach a blank row.
Any help would be appreciated.
Thanks

Code:

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Sub CompareAltRows()
Dim rw As Long

With Columns(7)
For rw = 2 to .Cells(Rows.Count).End(xlUp).Row - 2 Step 2
IF .Cells(rw + 2) < .Cells(rw) Then .Cells(rw + 2).Interior.ColorIndex = 3 'Change "Interior" to "Font" to color just the text.
Next
End with
End Sub

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Hi SamT
Change the comma to < In the If line?

Stubid Kayboard

Thanks guys much appreciated