Private Sub myclick_Click()
Dim SearchString, SearchChar
SearchString = "XXpXXpXXPXXPabcp padd" ' String to search in.
SearchChar = "PX" ' Search for "PX".
For i = 1 To Len(SearchString)
MsgBox InStr(Mid(SearchString, i, Len(SearchChar)), SearchChar)
' how did I highlight the search string
Next
End Sub