Existing Joomla Site Modification

I am running a website using Joomla. I don't like the Joomla Contact Form, so I need something customized. I also don't want any of the Joomla existing add-ons. Some are impossible to customize from a layout perspective. Both forms will be emailed to specific email addresses. Visitor must receive a copy of the email, with subject “ Your inqury has been submitted” Must capture, Date/Time, Host and IP. Basic validation for required fields, including email address verification and telephone number auto-formating. Once submitted the customer must be directed to Thank you Page. ------------------- CONTACT US FORM First Name: Last Name: Company Name: Title/Position: Address 1: Address 2: City State: [drop down selection] Tel: Email: How did you hear about us? [drop down selection] Nature of Inquiry? [drop down selection] Message QUOTE REQUEST First Name: Last Name: Company Name: Address 1: Address 2: City State: [drop down selection] Zip Code: How did you hear about us? [drop down selection] Total Number Of Incoming Lines? Incoming Line Type: [drop down selection] Total Number of telephone extensions? Multisite Solutions? If so how many branches/telecommuters ? Existing Telephone System? Desirable Features [ checkbox selection ] Your estimated budget? [drop down selection] Additional Requirements / Comments -----------------------------------