Accessing Export format (SQL Server 2005)

Hello everybody ...

since we have to create a report (SQL Server 2005 Reporting Services) for our customer with a logo in the header we occur the following problem.

If we use a print optimized picture with a high resulution the HTML View sucks.

If we use a web optimized picture with a lower resolution the print is far away from good.

Now we thought about using two different images (using expressions) but even though we know how to set the Export format over the URL or the SOAP Service (EXCEL, IMAGE, PDF, HTML4.0 etc.). We don't know if it is possible and if yes how to get this information.

Please help!!