Not sure what your question is here. When a report gets deployed to the IIS website and a user (or you) clicks on the report to see it, you automatically get a little drop down box which allows you to choose to export the report in any format you choose.
Are you looking to use a third party app to automatically export the report without going to the website? Are you looking to limit the export options?
A little more detail on this issue would help us answer your question more precisely.
Catadmin - MCDBA, MCSA
"If a person is Microsoft Certified, does that mean that Microsoft pays the bills for the funny white jackets that tie in the back???