I am a novice and would really appreciate if someone could help me out here

I would like to use SugarCRM CE for my web business. I have a web hosting account (associated with the DNS, lets say mywebsite.com), which comes with IIS, PHP and both MS SQL and MySQL. I have created a subdomain lets say, admin.mywebsite.com

Now I would ideally want to install Sugar such that I access it through this subdomain. So, my questions are:

1. Should I install Sugar with stack installers or just the sugarcrm-CE-6.1.1-windows-mssql-installer?

2. Do I need to copy the files to the subdomain folder and start the installation from there?

3. Is there anything extra or less than what is mentioned on the installation guide that I need to be mindful of during the installation?