really hope someone here can come up with an idea to get me out of this one:

I recently laid a new floor in my dining room, it's solid oak and it actually looks quite good considering I put it down!

Only problem is, it's quite creaky when you walk on it.

I asked a few friends (one contractor builder, the rest just amateur DIY'ers like me) about the best way to lay it, and they all said to install it as a "floating" floor. So I went out and bought a load of fixing clips, and as I went along, I put one clip about every 3 foot from each other between each strip of flooring.

Now I'm not so sure if that was needed, as I was laying it onto existing floorboards.

I'm pretty sure it's the fixing clips which are causing the floor to creak, but I don't think I'm going to be able to lift it all up (without damaging it all), as the clips are holding it all together pretty tight. Any ideas on how I can stop the creaking?