Custom code for Squarespace website

Hi, I am in the process of building a Squarespace ( [login to view URL] ) website with the Momentum template and require a 'tweak' to the homepage which hopefully can be done. My website address is : [login to view URL] So maybe someone who has used Squarespace before would be good for this job. Unfortunately I don't know anything about CSS or HTML but basically this is what I am after : 1) On the homepage I would like a transparent text box that allows me to put in a couple of descriptive 'keyword' rich sentences, firstly so people know they are in the right website and secondly I don't think it would hurt for SEO purposes. I have uploaded a screengrab of what this could look like. I would like to know how to update this text myself for future. The text box will remain static as the slideshow moves behind. 2) I would like a simple 'spam blocker' put on my forms pages (the estimate and contact page) Here is a link to Squarespace and adding custom HTML, CSS AND JAVASCRIPT - [login to view URL] You will have to add this code yourself, I can give you my login etc. Please quote both parts of the job separately. Also I am based in New Zealand so please let me know how payment is best to be made. HELP PLEASE ! Cheers Lucy