I find it amazing in this day and age that someone could successfully set up a microcontroller to act as a web server, serving up a web page with data from the microcontroller, yet not be able to write a web form to interact with the system.
Maybe you need to take some time and remember what a forum is about.
I was merely commenting on how, back in the day (ie, mid-1990s or so?), one would be more likely to know how to set up a CGI-aware web page with forms and such - long before they would know anything about setting up the web server it was running on.
Then again, this was back in the days of SLIP/PPP and WinSock (among other anacronisms)...
I wasn't knocking on you specifically, just commenting on the fact that in a span of 10-15 years we've gotten to the point in technology where one can easily and cheaply attempt to run before they can walk (and all the resulting potential "disaster" that implies).
You're having problems setting up a web form, using it, and understanding it. Others have problems understanding why they are burning out their Arduino's by direct-connecting devices to the pins without knowing Ohm's Law (or how to read a datasheet).
It just used to be that one would take the time to study and learn at a pace suitable to the knowledge to be gained. Others have told me "That time is past"; still they fumble and make me wonder "has it really?".
In Busted Duck's defense, I have found myself in the same situation. I bought an Arduino, got started with some simple examples and started brainstorming. I then had the same problem as Duck...I was getting into projects that were a little more complex than my level of understanding would allow me to accomplish.
The good part about all of this is that I have continued to learn and my crazy projects have pushed me to learn more than I knew before I started the project. I think that is part of what the Arduino platform is all about.
Action Item: Unfortunately, I am not qualified to do this, but if someone were willing to write a short manual that could be used for beginners. I have the Arduino notebook, which is a great tool. What I have in mind is probably multiple notebooks like the Arduino Notebook. It could be used to lead a beginner through important building blocks in their knowledge base. One could be written about Arduino HTML, for example. There is a plethora of subjects to be written about, but it could be like a workbook, which could have example programs that could get someone started and some code snippets that show how to accomplish different tasks. I don't suggest that this would provide a complete program, so the "student" would still have work to do. I just think it would be a good start and point of reference for beginners.