How to create Customer in crm 2011

Hi ,

i have a new requirement that

create a new form to key in NEW customer name , mobile and ph num, select the property they wish to buy and

select status booked/ blocked/sold  based on customer option .

here, the customers are not existing LEAD.they are new..eg: they just made a call and enquire so the details are keyin in this form.

If the property is consider sold then this customer need to get converted to customer in CRM...how can i do that?

Any help will be appreciated.