Hi kckc - I think all your questions can be answered by reviewing the content here:
You might also find the admin guide helpful - it is located here:
You can also try out the demo, which is linked from the website link above, and download a free trial as well.
After you review the material, please let me know if you have any questions and I will be more than happy to answer them.
You can, but we don't recommend it:
All credentials based on Windows authentication will be disabled if you install on a domain controller.
Chris Foley | Support Specialist
SolarWinds | IT Management, Inspired By You
Support:866.530.8040 || Fax:512.857.0125