My site allows users to upload Excel files and I would like to convert these to PDF files. I can do this pretty easily with Excel / Office components installed on my local system, but not on Winhost server's because they don't install Office on their servers (which I understand). My Excel files a pretty standard, nothing fancy. Is there a Web Reference (WSDL web service) to convert Excel to PDF? Is there an open source (free) component convert Excel to PDF? How about converting Excel to HTML, and other suggestions?