Sanjeev:
If you are President's Club member, I've found that this card is good in places that you wouldn't expect. About 6 months ago I passed thru FRA and found that CO and Cathay Pacific share a lounge. I got there right after the CO flight had left (I was flying NW) and the attendant was more than happy to admit me (after taking down my number-I'm sure CO pays something for this). I had the whole lounge to myself. With NW charging a lot of money for admisison to lounges internationally, it pays to look around any international airport that CO flys to. I've had success even when thae people at the check in desk tell me that there is "No President's Club" here.