i've been asking to do some web application (refer to the subject above) but i've got no idea how to do so, from where i should start and so on. could anyone give me some advise?

What do you mean by audio conference? Is this a bunch of people on a telephone line? What do you mean by web conference? Do you mean a chat room (text only)? Do you expect users to talk into microphones, and have their voice transmitted over the net? Do your clients want video? For everyone? Does one party do all the talking, and everyone else does all the listening (and/or watching)?

This problem isn't by any means simple to solve. As you can see, there's a lot of questions that you need to answer. I suspect that it'd be cheaper to use off-the-shelf conferencing software / hardware (web cams, microphones, etc) than it would be to pay someone to write this application from scratch.


Take care,

Nik
http://www.bigaction.org/

thanx 4 replied. actually it's a lecture conference and b4 this the lecture were using audio conference for lecture where students and the lecturer comunicate through telephone. now i was asked to replace the audio conference into web base conference.

The situation now is like this, students will be given the lecture notes a week earlier and the lecturer will upload the notes according to the date that he/she has set (example on 2nd Feb, 24-hours from the notes are activate/upload)after that the notes will be deleted.During the lecture where lecturer and students comunicate through microphone(internet)and everyone can hear others voices and students can ask the lecturer if they got any question.

next, student can give a feedback/submit tutorial to lecturer but other students can't access/read it. students will be given just a week from the lecture date. after that, other students are allowed to read the feedback/answers that were submitted by others.

i know it's quite complicated to explain what should i do but i just want a rough idea from you guys. should i design the interface first or should i build the database system first? or what? i'm lost now..

I dunno. I think it might be worthwhile to investigate currently available web conferencing products. This is a complicated system, and it might be much easier to install (and, if necessary, customize) an existing application than to write one from scratch. Especially with PHP.

The problem with using PHP for this is that PHP isn't capable of maintaining an active client/server connection. You'll need to use a technology that makes this possible, e.g. a Java applet.


Take care,

Nik
http://www.bigaction.org/

  http://www.google.com/search?&q=web+conferencing


Take care,

Nik
http://www.bigaction.org/

thanks for the advise nik.