[beardedwhale]

If that's your only connection to the alum, then your odds probably aren't good. But all they can do is say no (or ignore you). I would call on the phone if possible, rather than e-mail.

It's unlikely that they will resent you. People like to help. But you may not get a lot of help from someone that doesn't actually know you.

Another thing you could try, if time permits, is to call these guys up for help on some sort of project for school. Start building a rapport with them now, and maybe they'll be more likely to help you find a job next year.