If you're good with memorization, hamexam.org has flashcards, practice exams, and the question pool. Spending an hour a day, most folks can memorize enough of the questions to pass the practice exams consistently within 1-2 weeks. If you're motivated, you can probably do it faster. Then the trick is then finding an exam. If you contact the local ham clubs and tell them your situation they may put together a special exam session for you.