If you do not have CD/DVD-writer (or do not want to burn CD/DVD) you may use Daemon tools (it is located in BIN directory of downloaded zip archive, or you may download it from Downloads section on this site) to create virtual CD drive and MOUNT CD/DVD image to it.

If for some reasons Daemon tools cannot be installed on yours computer - you may use MagicISO program (you may download it from Downloads section on this site, use 'password' as password for downlaod) to extract files from CD/DVD image files into harddisk and install from there.