What you are probably looking for is to aggregate data from multiple forms filled out by multiple users into one Excel Spreadsheet. This can be done, but with multiple steps. You can create a SQL database to hold your information (submit to SQL using a web service), then use Excel to query the data from the SQL server (In Excel 2007, click the Data Tab --> click From Other Sources button --> select From SQL server). In this way, you can make the data easy to manipulate, since Excel is a tool that most users are familiar with. The bonus is this can be done without code, but you will have to have someone who knows how to do the queries set up the Excel spreadsheets.