Yes, they will be compatible.Get SATA DVD writer from HP for 900 bucks.
for both
sata 1,2,3 are compatible with each other
also buy a new dvd writer.
do not buy a ide to sata converter as they are very bad
i have a ide to sata converter (for Rs 100) and whenever i try to burn a cd/dvd it show an error in middle of process, and it will not be able to read many dvd/cd's (scratched) and it will corrupt your dvd's (if a hang occur during reading, i know that dvd are read only but it still does)