open an .xls extension (Excel) file in ideas 9

[thars]

hi, i would like to know how to open a saved excel file in ideas by creating a macro that when you click on it, it would open the excel file by opening the microsoft excel program... For example, suppose i have a file named test.xls. Now, if i want to create a macro called "Excel File" in ideas panel. When the users click on "Excel File", it should open up the test.xls in excel.
Thanx