That could be a problem thou.
If the computer only has a CD-ROM drive, it is almost certain to be pre-SATA and the SATA to IDE adapter don't always work, especially for using OD for boot drive.
The chance that the mobo support USB boot (so you can use a USB DVD drive instead) is also close to zero.
Check if you need a SATA or IDE DVD drive. The IDE DVD drive are closer to $40 in where I am, if you can find one.