PLEASE HELP ME, I BEG YOU?

[Dr Doom]

This will be a VERY long question, but please read it patiently. Its a matter of a few minutes for you, but for me its a matter of my life.

I'm an engineering graduate in computer science, 2011 pass out. I'm unable to get a job because of my pathetic academic record. People suggested I work for small company, and all that. But nothing is working. Even small companies are asking for good academic record. I even tried backdoor entry by paying 2 lakhs to a person who promised me a job, but he cheated me and escaped with the money. Hell, I'm even ready to work for FREE (just to get experience certificate for 1 year), but even then no employer is willing to take me. Now I've realized that its impossible to get an IT job because of my poor academic record. I've got really good technical skills, and my poor academic record was only due to two reasons:-
1) The quality of education in my college was pathetic. The teachers themselves didn't know anything. I failed a lot, before finally completing my engineering. There was no input at all from my teachers. I acquired all the skills only AFTER I completed graduation, by attending several training programs. I can't tell this reason to any employer because they feel I should have studied myself, without depending on teachers' input.
2) A more solid reason is that I've been a psychiatric patient since 2000 (when I was 13 years old), diagnosed with acute depression and schizophrenia. This made learning very difficult for me, hence I couldn't score well during graduation. Even now I'm undergoing regular medications and counselling sessions from a psychiatrist, but the symptoms are well under control. I can't tell this reason to my employees either,because psychiatric patients are seen as "crazy" by most people, and its social stigma as well.

In my stupid country India, people are employed based on their marks, rather than skill. I really hate my country. I have a good amount of proficiency with these things [ C, C++, Data Structures, HTML, Java, J2EE (including EJB), C#, Asp.Net, WPF, XML, Ado.Net, Oracle 10g, Derby 10.4 , Microsoft SQL Server 2008, Microsoft Office 2010, NetBeans IDE, Microsoft Visual Studio 2008]. I've also undergone a couple of trainings and certifications. Now please don't suggest me to work in BPO or call center. I have enough technical skills to build my own project. Just because of poor academics I don't want to work in call centers where even 10th grade passouts work. Besides, I've spent a lot on various courses and certification, which would be total waste if I go for BPO. And higher studies like MTech or MBA are not possible. Even if I do MTech, it will be of no use because recruiters ask for consistent academic performance, so I won't get employed due to my poor engineering academics even if I perform really well in MTech. And MBA costs lakhs, so I can't afford it. I can't even take loan because there is no earning member in my family to sign guarantee for loan. I'm already 26 years old. I'm desperately in need of a job because my dad is dead, and there is no earning member in my family. I have my mom, aged grandma and younger brother to take care of. So there are absolutely NO options left for me.

I really want to kill myself. I tried everything, but I've realized I'm a total failure in life. There is absolutely no hope left. But I'm very very scared of killing myself, because if my suicide attempt fails, I may become handicapped for life. So please suggest me some method in which death is certain (don't tell me to shoot myself, 'cos I don't have a gun). Since I'm a psychiatric patient, I do have psychiatric drugs with me. I have heard that an overdose of psychiatric drugs mixed with alcohol can cause death. Is this true? Please help me.