Provided that you have a spare IDE controller on your board not a problem.
There is usually at least 1 IDE to run a DVD or CD
If you have 2 DBD/ CD you could remove 1 and fit the hard drive in its place on the IDE cable
you will need to make sure the PC is set to boot from the SATA drive. To do this make the first boot device SATA if the option is available.If not you have two options: HD0 - If there are no IDE HDs present, or SCSI if you do plan on running an IDE HD as a secondary device.