I have an Access application that produces .PDF reports of survey 
responses at both individual and group level. The reports 
included "graphical" output all generated under program control. I want to 
create an application which provides the reports on demand via the web, 
and was seeking some advice on the tools available for the graphical part. 
The graphs are fairly simple horizontal histograms, surrounded by 
explanatory text and graph legend information.

What is the best way to do this? Generate .PDFs on demand and download to 
client? or use some graphing software in the ASP  to do it? Any pointers 
would be appreciated.