Is there software that came with the SATA card? Your gonna need to have something either;
A) Flash the BIOS to make it look at the SATA card then HDD to boot (doubt this is gonna be out there)
B) Have a small HDD or other device, CD, flash drive, etc loaded with instructions to look to the PCI card and SATA HDD to boot an OS. Its possible this type of software exists, but I have no clue. I'm just stating some info on how a computer BOOTS up.
You'll likely end up just having the SATA drive as a storage drive and keeping your IDE drive with an OS on it to use it.