Digital Maniac

During the last few months, I have been having troubles with my computer. I have been getting messages about some error and it has crashed several times, so I couldn't close it correctly. Even last night, I got this message about an error while I was writing on my story. And earlier this week, I pressed control, alt, delete and then it froze. So, I'm sick of that. I would like to have linux, but when I went to the computershop, they told me that they didn't have linux. I have seen the playstation 3 in... well, there are several shops that sell it. I heard that it has linux. But I'm not a gamer. Or maybe I could just get firefox for my computer with windows. It looks like the most problems are with explorer. Do you know if firefox is a good program?