Aras Installation

Hi eveybody, I am Sathishkumar C. I want know about Aras PLM installation hardware requirements. Interms of RAM and Processor (Dual core or Quad Core). Currently i have a system Dual core and 4 GB RAM. Can i Install Aras with this specifications? My requirement from Aras is:

1. I want install Development Server from Aras. I don't know the exact system requirement.
2. Less than 20 users will use the Aras in my Startup company.
3. How was the environment (Development server - Aras) will be? I don't have that much knowledge in programming.
4. What are the limitations and advantages with development server?
5. If i installed Aras in my system, how can i define a each user of  my company?
6. Can access via Aras from outside from the company? Or within the company (LAN) ? How it will  be connected?

Please give me a reply. Thank you in advance.