If you copy a table created in Excel 2010 and paste it in a Microsoft Word 2010 document, it will come with at least outside borders, if not all borders.

Paste Special can be used to paste Excel cells, tables, and worksheets into Word and PowerPoint while retaining Excel capabilities. To do so, copy the Excel cells, table, or worksheet.

How to Copy From the Internet and Paste Into Excel. Microsoft Excel accepts data input from your keyboard, through file import and by pasting the contents of your computer clipboard into a worksheet.