Dummy needs hard drive change help

[stumble]

I took my new computer parts down to a comuter repair man to install.  He installed the motehrboard and called to tell me I needed DDR2 memory.  The day before the memory arrived he told me to take the computer home since everything was connected except the memory and I could do that myself.   The memory came and I did it mysef, but when I booted up the computer it brought up the old hard drive and the old windows program.

I want to use my new SATA drive which is hooked up but it does not appear in my windows explorer.

Can anybody give me a blow by blow list of what I need to do to initiate my new Sata drive

Sandy in FL

[patio]

Sure...
But we're gonna need some important info first.
Is the SATA drive new ? ?
If not does it have an OS installed on it ?
What OS is on the original drive ?
Do you want the SATA to be just for extra storage or would you like to have it as the main drive with your OS and all info and programs on it ?
Or would you like to start clean with the SATA drive as your boot drive and if so what OS do you want to install ?

Let us know.