I have gone into the registration form and under the section Background, Rationale and History of the tartan it askes for: "Tartans ar created for many reasons, usually to celebrate an individual or family's Scottish heritage or connections, and the colours used are often of particular significance. Please provide as much information as possible about your tartan:
. Why has it been created?
.How do ou intend to use the tartan?
.Why have you chosen these colours?
.If you have used online tartan design software to create your design, please include detail of which site you have used.
.Please include the name and contact details of who should be approached should someone wish to so seep permission to use or weave this tartan. This name and contact details will not be published on the Register unless you specifically ask for it to be made availiable.
The information provided here willbe used to support the proposed name and category to your tartan, and edited to provide the rationale published on your tartan's web-page once it has been included on the Register."

Here is the address for the Register, you may contact them as to it being an option.
The Administrator
Scottish Register of Tartans
The National Records of Scotland
HM General Register House
2 Princes Street
Edinburgh EH13YY

Each of my tartans that I have put through the Register, I left this information out, as it was so large, and I created a web site addy that gave all thes details. I hope this helps you. You can also go the the Scottish Registery of Tartans Web site, open an account and go to the registry section for a new tartan. The form is there, with all the information you need to register a new tartan step my step. All the 'why's" you need to and more information is there. But like I said, them an e-mail, they are more then helpful with a fast reply.
Cheers Gary