I am putting together a registration site for a conference. I put together a simple web form but I want to secure the data that gets sent from that form.

The form includes a credit card number field and I don't want that to be transmitted through clear text.

How can I most quickly get this accomplished? I have no SSL certificate installed on the server.

Well, depends on which payment gateway you are using. If you are using Authorize.net, you can encrypt the data that are sending to them.

May be u should use Paypal or such 3rd party getway for the payment issue... as with out SSL i dont think any other mesure will secure the system enough...

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b2b

I go for PayPal. This is what their good at already. learning the security issues lengthens your development time.

I suggest you go with PayPal as PayPal has obviously SSL that you can use to receive payments and you do not need SSL yourself.

And in some cases, SSL costs for you.