I use Windows Vista/XP, Mac OS X 10.7/10.6/10.5. Can I use Serato DJ?

Windows Vista / XP or Mac OS X 10.7 / 10.6 / 10.5 cannot be used.
Serato DJ is supported the following operating systems:

Mac OS X:10.10 / 10.9 / 10.8
Intel® processor, Core™ i3, i5 and i7 1.07 GHz or better
4 GB or more of RAM

Windows: Windows 8.1/ 7
Intel® processor, Core™ i3, i5 and i7 1.07 GHz or better
4 GB or more of RAM

For information on the latest system requirements and supported OS, see the following Serato website.
http://serato.com/dj/downloads#min-specs