Heading into contract negotiations soon? Would it be helpful to plug your district's data into a spreadsheet and instantly get total-cost information in a variety of categories for up to five years? Then, check out OSBA's Proposal Costing models for licensed and classified staff. The models come on a CD with easy-to-follow written instructions, sample models and a tutorial. Designed for experienced users of Microsoft Excel, you will need a Windows-based computer with Microsoft Excel, a 330-megahertz or faster Pentium 4 processor and a minimum 512 megabytes of RAM to use the models. Choose the version that matches your version of Microsoft Excel.