SATA Hard Drive Detected As IDE

Hello, I have a problem with my Western Digital Caviar Blue 500GB SATA 3.0 hard drive.  When i Run Speccy it detects my hard drive as an IDE.. and because of this the S.M.A.R.T. Function is not detected but when i go through my Bios setup, it says [Enabled].. How Can This be? did i do something wrong? Do i need to reinstall my OS?

My MOther Board is a GIGABYTE GA-M68MT-S2P
My other PC specs are:
4GB DDR3 PC1333 ram
AMD Athlon II X4 640
Sapphire 6770 1GB DDR5..

oh and i have one dvd drive i think its Lite on Lightscribe.. it is also sata. Please..i really cant solve this problem.

You should be able to change it to ACHI mode in BIOS without reinstalling. This error might occur but here is the fix: