T Shirt Designs Software

What is the best design software for the creation of a new clothing line?
I have many ideas for a new clothing line, but I do not know what to download software to start my ideas. I want something I can design everything from shirts to jeans to jewelry and hats, if possible. I'm using a MacBook Pro and prefer something that I can see a 3D model of my designs. What software do the best job for me, for a reasonable price or free?
hi ~ ~ just try to use AutoCAD functionality for free personal use. DWG 2008 DXF read and write. Similar icons, commands and interface. IntelliCAD AutoLISP interpreter, temporary point instant (as oSnap), layers, blocks. Hatch, block and xref editing. 3D shading and rendering options. Optional approx. ALE 10,000 symbols library. Download link: good luck http://www.brothersoft.com/progecad-smart-2008-personal-cad-download-69199.html Freeman
design t-shirts online workingspace overview