i need for a travel agency website to register clientes

Dear Gentle Monk,
I see you are new to The Monastery. Welcome. You've asked your first question and that is a good thing. However let me give you some guideance and direct your attention to the following:

• Welcome to the Monastery! Make yourself at home.. Pleae read this and understand what PM is all about
• Before You Post ... and learn how to use this site.
• FAQ
will save you a lot of grief in the long run
• How to RTFM for those inevitable RTFM responses
• How (Not) To Ask A Question so that hopefully you can avoid invoking the wrath of the monks assembled here. (We're nice folks really...)

But I know you are looking for techinical help so let me point the way in that regard too.

• use CGI or die;
• There's a wonderful off-site short course in web programming here

Specific advice? Let me enumerate some of the considerations that have to be thought through in order to arrive at a solution to your delima:

• What is the end purpose of this code?

  Think this one through carefully. Are you just providing accounts to protect web resources? Are you collecting information about your customers for a CRM system? Both? What does CRM mean to you?

• What is the cost benefit relationship?

  I have been known to take on the occasional independant consulting assignment in my day. One of the fatal mistakes I see made all the time when a business or professional decides to "take it to the web" is they don't consider if the time and money that is going to be exponded on developing the web site and maintaining it is going to yield a business gain. I'm not just talking about direct sales here either, I'm talking about what benefit to the business's bottom line it has in terms of advertisement soft dollars, new business generated and customer satisfaction. Just going out to the web aint gonna make you a millionaire.

Brer NetWallah has pointed out an excellent off the shelf solution. There are others. You might decide you want to go with something that you can get support for when it all goes wrong.

There are also a wealth of consultants out there who would, for a fee, be willing to discuss options with you. I'll warn you right now: you'd better have deep pockets if you want to go that route because good consultants do not come cheaply.

Define your problem set more clearly, try writing some code on your own and if you run into problems along the way then you can post here and get guidance. Asking a wide open question like you did is not a good way to get help.