your the over seer...so over see and go over to his/her desk and help them ...thats your job...so do it!

If he is not folloing your lead, you need to have a private talk with him about what he is doing and what you expect of him. If you are able, I would give them a written warning that states your expectations of future conduct.

The best solution would be to completely put the ball in his court. Take 20 minutes of a day to sit down and have a heart-to-heart explaining the situation you are in, and make him give you input on how he feels you should handle it. Make him tell you how to do it, and he will not only respect you more for being up-front and honest, he should understand better the dilemma you're in.

Realize that he's probably jealous that YOU got the Lead and he has to follow you. Even so, he SHOULD be following what that team or you decided, and do it right. Talk to your supervisor. (You might be told to handle it yourself.) TO me, it sounds like he might be trying to sabatage your "leadership". Make sure you check over his work. If it's not done correctly, ask him why it wasn't. Remind him that YOU are Project Leader and it needs to be done the way YOU (hopefully the team) has decided it to be done, NOT "his way". If he continues to be insubordinate to your position, and continues to defy the teams' design plan, you will report him. He MAY just need a kick in the ass like that to "get it". (I had a similar situation at my last position. He wasn't older, but foreign, and did things HIS way. I ended up having to "fix" his programming code, which he'd done HIS way, not mine. So, the project went over the deadline, and it was MY fault. It was a nightmare. He'd ignored my naming conventions, my commenting, and he hadn't commented ANY of his code. Thus, the code ended up a mish-mash, instead of the easy-to-edit code I tried to get him to do.) Nip it in the bud as soon as you can.

I would agree with a private conversation about how you've noticed his tendency to go against your direction and do things his own way. Let him know you see this as a problem and that you are interested in solving it in a win-win way, if possible. Find out if anything is bothering him that you can make better (more responsibility in decision-making or maybe more credit for his contributions). Taking into account his responses, and as non-confrontational as possible, I would then make my project lead expectations clear. Remind him that this is supposed to be a team effort for a reason. IF he is not receptive, or still does not become a team player, I'd follow up with a written summary confirming what you discussed, send it to him and copy your boss.

First of all, stop feeling guilty. You got the job because you earned it. This other guy just has to deal with it. Don't make that your problem. I understand that he is older but that is not your problem either. Make him accountable by giving him a specific task and if he doesn't follow through, write him up.

you have every right to get the answer for what you need for the work. Whether he comes to your desk or you go is immaterial as long as you are getting the inputs required for the work is going on.