Hello zohaib222,
Microsoft Office Enterprise 2007 was never offered to retail consumers as either a full packaged product or as a download.
If you acquired Office Enterprise 2007 thru an employee participation program such as HUP, or thru an academic source such as a university, please log onto your HUP page and contact customer service for assistance, or contact your academic institution's
tech support staff for assistance.
Buy Office 2007 Now, Get Office 2010 Free http://office2010.microsoft.com/en-us/tech-guarantee/microsoft-office-2010-technology-guarantee-FX101825695.aspx?CTT=97