Create a Folder and copy files to that folder from a web page

Question

I am working on a project where our Sales Manager will go to an office, demonstrate a web page to the agent in the office.  If the agent wants to follow the sales process demonstrated, the Sales Manager would then click on a link on the web page, put in his password and the web page would create a folder on the agents desktop and copy several files into that folder.

Can anyone tell me how I can create a folder on the desktop and then copy the files into that folder?  Sample code would be very beneficial.

Thanks

David