Question #3: Is the Windows PC you're using part of the Andrew Domain?
How to tell...
1) Right-click on My Computer and choose Properties.
2) Go to the Computer Name Tab.
If you're not on a domain, this box will display your Workgroup name. Answer No to the above.
If you are on a domain, this box will display your Domain name. If it says andrew.ad.cmu.edu, then choose Yes above.
Otherwise choose No.