VBScript (.vbs file) To run a macro in an excel in predefined intervals

I have a macro written in an Excel . I want you to write a VB Script to create a ".vbs" file which can make the macro run in the Excel in predefined intervals. I have written a code, but its not returning me exactly what I need. I can share the sample VBS file and the Excel file to interested person. I think this will not take more than an hour for a person who is good in VBS scripting or any other windows scripting.