A new order form is available that allows you to purchase either Microsoft Office 2007 or 2010 for $19 at http://www.gcccd.edu/faculty.staff/ . The link is about half way down the text of the page and says "Office 2010 Form."
You do not have to purchase SharePoint Designer 2007 for home. Microsoft allows you to download it free from http://tinyurl.com/cz22uy. The SharePoint Designer offered on that form is only there in case you want a disk for the program, you can pay $19.
This software is for use on your home computers only. A date for updating campus computers to Office 2010 has not been determined yet, so please do not use the disks you purchase to update your office PC.