how to create a button ( on ms access form) to export the current form into xls workbook?

how to create a button ( on ms access form) to export the current form
into xls workbook?

I want to create a button "Export-XLS" on my form in ms access 2007 which
will automatically on click will export the data of the current form into
the excel sheet. Please help. how do I do it? are there any specific VBA
codes that are needed?
Thanks in advance :)