Microsoft Word, Excel and PowerPoint documents from version 97 to 2003 can be converted to Microsoft Office 2007/2010 or OpenOffice.org format, although the conversion is not entirely lossless and may lead to loss of formatting.
Microsoft Word, Excel and PowerPoint documents from version 97 to 2003 can be converted to Office Open XML (Microsoft Office 2007/2010) or ODF (OpenOffice.org) format. Conversion is not entirely lossless and may lead to loss of formatting.