This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Exporting to Excel shouldn't be too much of a problem.
Really, all you have to do is send a csv file to the client, but change the header from text/html to excel. Excel will automatically come up if it's installed on the client, and display the data in cell blocks according to the way it is partitioned by commas.