Agoraphobia/depression/anxiety

Hi gang. I've written before about finding some relief from my depression when I started using Remeron and serequel.  Although I still feel some depression, it's not completly dibilitating as it use to be. (I'm sorry my spelling is terrible and I can't find spell check on this thing.) I was a programmer most of my life, however, now I am disabled (my back) and homebound.  My wife died 4 years ago so I am pretty much alone.  Strangely enough, I like being alone.  Along w/ my depression I am agoraphobic.  I can get out but when I'm out I just want to get back home in my 'comfort zone'.  I don't even like people comming by.  I just like to be left alone.  Is there anyone else out there that feel the way I do.  Is the agoraphobia just a symptom of depression?