I have a client of my web based application who heavily uses the data from our system for powerpoint presentations.
We currently allow data to export in more traditional
In regards to the previous poster, your statement is incorrect.
You really only have one option for server side ASP.NET automation of this process. Use the open xml links mentioned by Ben in the original answer...
Manipulating Excel 2007 and PowerPoint 2007 Files with the Open XML Format API (Part 1 of 2) Manipulating Excel 2007 and PowerPoint 2007 Files with the Open XML Format API (Part 2 of 2)
The reason for this is that server side automation of office is completely unsupported and is bad coding practise, running com automation servers that are designed for interactive usage in a non-interactive environment is a potential recipe for disaster.
so in summary use the open xml api and generate your pptx's.