Sharepoint Demonstration

I saw a sharepoint like "uploads" and was impressed with the way it works with Office applications. Other than that, I don't have much use for it. So I was wondering if anyone knew what was involved in setting up a similar thing in ASP code?

The idea being that a template is available on the site, the user clicks on it and the appropriate application opens. When the user saves the file it's default "Save To" folder is a Network place, on the sharepoint server.

I figured I'd just create a virutal directory in IIS, give everyone write access to it then away I'd go. I can connect to the network place, but I can't save to it.I've configured the Virtual Directory as "Write" and set NTFS to Full Access for me and Authentication is Windows.