Give skr00z (Steve) a call at 757-285-0627. He should be able to pull the ignition cylinder for you and then you can take it to a locksmith to get a key made. You might also want to take your helmet lock or your seat release lock with you because sometimes the ignition key will work, but the peripheral locks won't.

Don't worry, the same thing happened to me a few months ago. Pulled the ignition cylinder and then found the key that night. At least I didn't spend any money...