How can an intellectual introvert find an entry-level job if English is not her mother tongue?

I got a B.S. degree in Computer Science/Math in 2002 when the job market was so down and could not find a job after very long searching so I decided to further my education by pursuing an M.S. degree in Accounting/Info Management. During that time, it was lucky for me to find a part time job at a small firm and work as an Accounting Clerk for almost a year before the firm downsized and let me go. Eventually, I did graduate last December but still couldn’t find a job until now. I am so much of an introvert and English is not my mother tongue, so it just seems to be a vicious circle going round for me. I have no social activities or contacts and just don’t seem to fit in this extroverted society. I feel so frustrated after being turned down by not-so-many interviews I’ve got. Any input or advice of yours will be highly appreciated. Thanks in advance.