1. Try booting just with the SATA HDD. If everything works fine, you may check the Master-Slave configuration of your HDD's. This configuration used to be there in the older IDE's drives (all HDD's, ODD's and FDD's).... and you may skip the next para to go to the third one.
2. If in case you are unable to boot into the Windows, getting Disk Not Found (or such) error, probably your boot manager is located (mostly on C:\) in your IDE HDD. To correct this Boot in with the Windows 7 DVD and try repairing the Boot Screen. Once it finishes try running Windows again. If successful, you can try the below mentioned steps.
3. You'll need to make your IDE the slave (by configuring the jumper correctly by consulting the manual of your IDE HDD).-This step should be done with utmost care.
4. This done, reconnect your IDE drive, have a quick check in:
BIOS > Standard CMOS Features> IDE Channel * Master etc.. showing your SATA HDD as Master and your IDE HDD as SLAVE.
5. Now set the SATA HDD as the Primary Boot Device:
BIOS > Advanced BIOS Features > Hard Disk Boot Priority : Select your SATA Drive as your primary boot device, save the settings and then save the BIOS settings
Good Luck!