Adding Registration Module Fields & Linking to Checkout Module

First, here is my system info:

Gallery version = 2.0.2 core 1.0.0.2
PHP version = 5.0.4 cgi-fcgi
Webserver = Apache/2.0.51 (Fedora)
Database = mysql 4.1.14-standard
Toolkits = ArchiveUpload, Exif, ImageMagick, SquareThumb, Thumbnail, Gd
Operating system = Linux dprhensim75.doteasy.com 2.6.10-1.771_FC2 #1 Mon Mar 28 00:50:14 EST 2005 i686
Browser = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)
Checkout_v0.1.12
Checkoutemail_v0.0.6

Hi Guys,

This is what I am trying to accomplish. I would like to add more fields to the registration module; like Client's address, company name, contact phone, etc. I've successfully added a "Company" field, but the client basically just goes through the motions of typing it in as Gallery doesn't store it yet. What I would ultimately like to accomplish is for these new fields to be stored and show up on the Checkout - Checkout Email in the same way as their name and email address show up on the Customer Details page in the ChekoutEmail Module when that user is logged in to Gallery2.

The site address is www.jimhelselphotography.co.nz/gallery2

Thanks,
Jim Helsel
Jim Helsel Photography - New Zealand's Best Sports Images