CASE42, you don't see the button b/c you were registered as a "registered" user where previous users were registered as authors.  We don't presently have a system in place for submissions.  If you would like to submit, please put together the pictures and email them over to Jacob Head from the contact page.  Hope this helps, can't wait to see your mod.
"Fix it 'til it Breaks."

Jacob - EiC & Director of Technology
Mac Pro Quad 2.66 - 4GB RAM
160 GB SATA RAID 1 - 650 GB Storage
Quad 19" Widescreen LCDs
Accessorized to the Hilt