my nef confusion...

So i'm having confusion about how to edit my nef (raw) files.
I'm using Photoshop CS2, it seems that it doesn't support my D5000's NEF.
I don't want to spend more on Capture NX.

After almost a week of browsing forums and downloading various softwares and updates, i've finally download the newest Adobe Camera Raw.
I'm going to try this ACR 5.6 with Photoshop CS3.

Hope it's working.

Wish me luck!

PS: all of these softwares and hardwares thingy got me headache...