Islam- Convert In The West really California?

Ok. Here is my dilemma, I was born in the US and a majority of my life I didn't have a single belief in religion. Within the last few months of my life I started reading the Qu'ran and converted over to Islam. I took my shahada three weeks ago but I've been living as a Muslim months before. Now that I am a official muslim I see many things wrong with myself and the people around me. my girlfriend is a unbeliever but I have 2 children by her and another by my ex-wife. My family mocks me because of my belief. All of my friends are unbelievers and to me are evil now that I see Allah has guided me. I am constintly tempted by my prior affections to women. I'm not afraid to lose everything I have for my beliefs. My concern is that since I am American and the world over here is totally different from Muslim countries. I'm pretty much a techie and I'm all into computers and games. Should I get rid of these since it takes me away from studying? I was also wondering is it alright for me to feel this way? I want to live in a muslim community or a muslim country but I can't because my obligations are here. How can I be a good muslim if I'm surrounded by Unbelievers?