Contract Expense Tracker

I need an Microsoft Access 2007 database built that has several fields and a form that I can input: Contractor Name, Contract Number, Total Contract Amount, Contract Amount $ for only the Year in question, Start Date of Contract, End Date of Contract, Contractor Address, Contractor Telephone, Project Manager's Name, Contractor Tax ID Number, Contractor Bid Type, three separate fields for a drop-down box of preselected Specific Account Codes, Specific Work Order Code, and three brief memo fields. Then, as invoices are received from the contractors, an input form that lets me record the Contractor Name (dropdown list), Contract Number (automatically inputs), Invoice Number, Invoice Amount, Invoice Date, Date Invoice Received, Specific account code1(dropdown list), Specific Account Code 2 (dropdown list), Specific Account Code 3 (dropwdown list) , Work Order Code (dropdown list), Project Work Desciption (dropdown), an ongoing field that calculates the Total Contract Remaining Balance, an ongoing fieldsthat calculates the year in question balance, and two brief memo fields. There will be about 400 different contractors and the contracts will be for several years. Then, several reports that list and totals invoices either: (a) per contractor, or (b) per Specific Account Codes, or per Work Order Code, or based upon a word match in the the Memo fields.