[HelpDesk] Helpdesk question via web

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Form data:
  Name: Brian Kovacs
  EMail: briko at neo.rr.com
  OS: Microsoft Windows XP 2000
  UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; FunWebProducts; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; .NET CLR 2.0.50727)
  IP: 71.74.149.121
  Time: Mon Jul  2 00:35:12 2007

Hi, I have never designed a Lego brick before, but I am an amateur 3D designer. I can design meshes for the TRLE (Tomb Raider Level Editor). I also have a program called Metaseq (Meta) that I am familiar with. I have a few beginner questions:
1. Can I design bricks on my Meta program?
2. If so, how should I export the 3D mesh files and what other programs ill I need?
3. All I really want to do is design the Star Wars Minifigs. Is there a blank that I can download for the head or the body, because all I want to do is modify the stickers?
4. Do I really need to edit the minifig head mesh if all I want to do is change it’s decal, and NOT its shape? Or is there a program made just fore adding pictures to already made bricks?
Thank you fore all of your time and help. I truly appreciate it.