Hidding Multiple Rows

I need a macro to hide multiple rows based on the cells contents.

I found a previous post here and this macros works in that in hides rows in Column B base on a value of " ". I cannot however amend it for my needs. I'm still a noobie in excel anf macros.

Post is here:[url]

Option Explicit
Option Compare Text
Private Sub CommandButton1_Click()
Dim LR As Long, i As Long
Application.ScreenUpdating = False

LR = Application.Max(Cells(Rows.Count, "C").End(xlUp).Row, Cells(Rows.Count, "I").End(xlUp).Row)
For i = 1 To LR
Rows(i).Hidden = (Cells(i, "C") = " " Or Cells(i, "I") = "x")
Next

Application.ScreenUpdating = True
End SubI'm using Excel 2007.