We still recommend them for computer faxing and backup Internet access. Not every computer needs a CD-RW or Zip drive, but it's nice to have one or two on the network to create your CDs, make backup copies of software, or create extra copies of key data files. We sometimes buy them for laptop luggers to watch DVD movies on airplanes. There are few applications in the office. I'd get 32 megabytes.
Few users require premium-priced cards.
For standard desktops, three years is nice if it doesn't cost more. Make sure your system includes the good stuff, like Microsoft Office 2000. Whatever you buy, expect three years service from a new computer. That's ridiculously short compared to other capital equipment. With falling prices, the good news is you can actually afford to replace computers every three years.