Excel business plan template

I am an acounting savvy company director and am looking for an Excel template (ideally free) so that I can create a finacial forecast, balance sheet and cash flow statment for an up to 5 year forecast. First year by month the other years by quarter.
I will need to build a revenue model and staffing model. The overhead cost model will be very straight forward with no more than 20 line items.
I am presuming that such things exist on this site or or soemwher on the web but I have yet to find them. Can anyone help?
Thank you
Tim Cooke