Macro Works Stored In File But Not In Personal Folder

I have created a simple macro that inserts a header onto a sheet on the first row of a workbook. It works fine when the macro is stored in the file that I am wanting to paste the header into, but when I moved the macro to my "personal" folder it gives me a debug error with this code:

Code:
ThisWorkbook.Sheets("Bid Sheet").Rows("1:1").Insert Shift:=xlDown
ThisWorkbook.Sheets("Bid Sheet").Columns("K:K").ColumnWidth = 50

I am assuming this error is being caused by the phrase "ThisWorkbook" but I do not know how else to reference the workbook I want to run the macro on.

Full Code:

Sub Insert_Header()Dim wb As Workbook'Open Workbook
Set wb = Workbooks.Open("C:NewPage_Logo.xlsm", UpdateLinks:=False)    
'Go out to File and copy logo and header  

[Code] ........