Affiliate Marketing Secrets

But here is my question this job requires a security clearance,and it is some type of government affiliated place they provide different things for military airplanes,and stuff like that,I just applied for a janitor job it pays 11 an hr with plenty of benefits.But I lied on the application about my criminal history its not a bad one and its not a good one either I have not been in trouble since 08 and they are drug possesion.I want to be honest with them,I lied because I really wanted the job now I am nervous that not telling the truth will jeapordize me getting the job.What would be best at this point I really want it I could retire from there all them benefits..

Recently, the I.T. company I worked for closed it’s doors. The reason was due to the economy. Our client base either cancelled their services with us due to them closing their doors or just cutting back for economic reasons.
I didn’t like this but thought that I would really have no problems getting another job as I usually scanned the I.T. job listings online and there seemed to be plenty listed. I also figured that my CCNA & CCNA/Security certifications would be a plus as well, not to mention I am working on my CCNP.
Here is the problem. Now that I am actually in the job market, I still have no problem in finding a plethora of I.T. job listings, however, 99% of these listings have a stipulation that the applicant must have a current security clearance or in many instances, a top secret clearance. With out either of these, they will not even consider you. Years ago I never saw these requirements, though I do remember seeing that you must be able to get one of these clearances once employed; now, as said, they won’t even talk to you without having a current clearance. I never needed a clearance with the last company I worked for so I never thought about this either. I also see no reason why I couldn’t be cleared as well.
How does one get one of these clearances, or am I just screwed here with my certifications, training and experience and now unmarketable commodity?

Why and what happened to them were they discharged? Any legal repercussions?
What’s the difference between top secret and just secret when you get out on the job market?