Microsoft will stop supplying OEM Microsoft Office 2003 from June 30, Microsoft exec Eric Ligman wrote yesterday on the company's blog for small businesses.The declaration means that Microsoft partners without inventory of Office 2003 must ship Office 2007 from July onwards. Microsoft is making a heavy push for Office 2007 and seems to be now using OEM partners in the vanguard for driving sales. Customers on volume licensing agreements can still run Office 2003 by activating the downgrade rights in their contracts from Office 2007. OEM Microsoft Office does not have downgrade rights. Microsoft is running a webcast on June 21 to explain licensing options to resellers for Windows, Office and Server products.