Find Sheet Name Within Workbook.sheets

I'm currently writing a macro to check for changes between versions of a spreadsheet. I'm having a problem looping through the sheets and selecting equivalent (named the same)sheets in both sheets. My attempt at code (stripped down a little) is here.

Option Explicit
Sub Difference_Checker()
Dim Check As Boolean
Dim Row As Integer
Dim Column As Integer
Dim ColRef As String
Dim MaxLength As Integer
Dim MaxWidth As Integer
Dim i As Integer
Dim j As Long
Dim Shtname As String
Dim StartTime As Variant
MaxLength = 100
MaxWidth = 256
'Set Application Settings
Application. ScreenUpdating = False
Application.EnableEvents = False
Application.Calculation = xlCalculationManual....................