If you're considering discussing a flexible work arrangement with your boss, you might want to prepare a written proposal, if for no other reason than to help clarify your own thoughts. The Microsoft website contains all sorts of sample documents for business, academic and personal writing, including this nifty Flexible Work Arrangement Proposal form at http://office.microsoft.com/en-us/templates/TC012197971033.aspx?CategoryID=CT011389841033. Note: You need Word 2003 or higher to use this template.
For more information, follow the links from the template to Microsoft's Work & Family Connection page at http://office.microsoft.com/en-us/marketplace/EY012075431033.aspx. You'll find links to an article, another template on work-life balance and the Work & Family Connection home page.