Hey there Richmond,
If you want to me to give you a real evaluation, I need a weeeee bit more info from you - like what country you come from, what school you graduated from, what you studied, what your main achievements are, etc.
But I'm afraid I don't have great news for you.. as an IT male, with a 670 and no extra curricualrs, you won't have much of a chance at either Chicago or LBS..... maybe maybe IE you will be a stretch. So my first piece of advice to you would be to select schools that would be more in line with your GMAT and experience.. In the US I'd have a look at schools ranked about 25-60 (according to the US News rankings).
Hope this helps,
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