Jane,

>I want to put some VFP apps on the web. I know nothing about it. How much code can be preserved? Is it better to use my already-written VFP app or rewrite it in Oracle or something else?

The design of your existing apps will determine how much of the codebase you will be able to reuse in your web version. If your application logic and data access are nicely encapsulated, a la n-tier design, you will be much better prepared for the leap to web.

Web applications must operate in a "stateless" mode, where each request to the web server for querying, adding, or updating data cannot depend on the "state" of open tables, record pointers, variables, etc.

With that being said, you still can probably salvage a good bit of your application logic, but not very much of your user interface.

I'll add another vote for www.west-wind.com . Go there, read all the papers, download the Web COnnection demo, read the messages on the discussion group, buy Rick's excellent book, and you will eventually be happy you did.