Hi,
I'm not to sure exazctly what you are trying to do.
You might try this line from a webapp:
Response.Redirect("C:\Path\FileName.xls")
If you put that line in a button control on a web page, when the button is clicked the excel page will come up in your web browser.
If you are hoping to work with the data from your web page you will need to research "Automating MS Office" The specific code depends on your version of office and VB
It's also possible to use File I/O and read the excel file in binary mode then create a html textfile and put the information into the webpage. if you try this make sure to make a copy of the excelfile before you test your program because if you change the binary info it can corupt the file.
Tom