[HelpDesk] Helpdesk question via web

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Form data:
  Name: A.J.
  EMail: gieco007 at earthlink.net
  OS: Windows XP 
  UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; FunWebProducts)
  IP: 71.34.92.170
  Time: Sat Jun 23 19:32:43 2007

Hello, I've been having lots of fun with the Ldraw program but I still have a lot of questions. Resently I've been trying to make seperate models that you can import into a file. Like say you make a custom minifigure and you wanna put it into another file. How do you save it into a model file that you can just pull up and insert into any file, like you would a normal lego part? 
My second question is how do you rotate a brick to a custom setting. See I've been trying to make a model of a lego computer. You guys have the parts for the model in your files but I don't know how to rotate the hinge piece. I know that you can rotate it 90 degrees and turn it, but how do you rotate it in between those angles? 
Hope you can answer my questions, thanks.