Ask Slashdot: Security Certification For an Old Grad?

An anonymous reader writes: I graduated in late 2003 during the tech bubble burst with a below 2.5 GPA. I am 35 with an interest in getting a security job. What are the chances that I would be just wasting my time and money? I am pursuing business interests with a patent used in a service that will be a prime target for hackers. I have been writing client/server software in an OpenBSD virtual machine for the security and the kqueue functionality; not to mention the rest of the virtual clients crash that I have tried. I figure that trying to sell the service idea, even if I can't get a job, when they ask what qualifies me to have such ideas, I can say I have the credentials. I just got issued the patent this year. What would you do in this situation to be a viable candidate for employment? Have a question for Slashdot's readers? Take a look at other recent questions first to see if someone else has had a similar question. And if not, ask away! The more details and context you include, the more likely your question will be selected.