"A male non-citizen who first takes up permanent residence in the U.S. when he is at least 18 years old, but not yet 26 years old, must register within 30 days of becoming a resident. If he first enters the U.S. as a resident when he is 26 years old or older, he does not register with Selective Service because he is too old to register. Male non-citizens in the U.S. temporarily (valid student or visitor visa, diplomatic corps, etc.) do not register."
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http://www.sss.gov/when.htm
If you are receiving financial aid from the U.S. Government then you have to be a permanent resident or citizen, in most states.
Jam it back in, in the dark.