After copying files from Ubuntu 7.04 to Windows 7 I am unable to open the files. In Ubuntu these office files include spreadsheets, presentation and word processing documents.How do I open these files in Windows 7 using Office 2OO7?
Then convert your documents to .xls or .doc so you can open it in Office 2007.
That sounds likely to me too. As an alternative to downloading and installing OpenOffice on your Windows 7 system, you could also just go back to the original documents on your Ubuntu system, re-save them in MS Office format, and re-copy them to your Windows 7 system.