Hey everybody...

So me and 4 other people I was with were stuck at Frankfurt airport (going to NYC EWR-Newark) for 4 and half hours. They said there was mechanical problems that they were waiting for a part to be shipped in... Was pretty poorly managed...

Now, this was Lufthansa but co operated by Continental (it was a continental airplane though)
I heard from friends in europe, euro law states that after your plane has been delayed for more then 4 hours you could get free tickets again. They got free tickets also.

How does one go about this? Writing a complaint letter... Any recommendations... It was a business purpose flight, so I could mention my business and others I refer to will not recommend Lufthansa or continental. Maybe that might scare them.

Should I write it to Continental or Lufthansa? Or both?

Anybody have stories like this that you wrote letters do and got deals for future flights? Or discounts?

Thanks! Let me know!
-Blake