Return to certain tab each time workbook is opened

Hi,

I have an excel file on a share site which is accessed by several people. The first tab is set up as a home page which directs the person to the relevent part of the work book that they need. My problem is that as the person saves their updates it also saves the location of the workbook they were in. I want it to return to the " homepage" automatically each time it is opened. Thanks in advance.