Help with this theme

Hello I am using this theme here: http://rgz.1b4.myftpupload.com/ and am having a few issues: 1. My widgets are appearing on EVERY screen instead of the screen I am editing. How do I fix this? 2. I have a white bar just above my footer I cannot seem to get rid of. 3. My "menu" page is showing the Archive and I cannot delete it. 4. The right column of my contact us page needs to have a black background, and I cannot figure out how to change it.' Can someone please help me? I am new to word press and I would very much appreciate the assistance. Thank you!