Insert the DVD, open it up, and run the installer.
iWork 09 is installed into it's own iWork 09 folder in the Applications folder. It should not touch an iWork 08 installation.
A 30 day trial version of iWork '09 can be downloaded from the Apple website. (See links below)
Installing iWork 09 will take up 658 megabytes of hard disc space.
you need an app, or you can Email it, but you need iWork 09' to Email it.
I don't think there is a version of iWork for Windows. However, with iWork '09 now going online, it is possible that Apple will be letting Windows users use the service.
http://forums.electronicarts.co.uk/fifa-09-pc/357780-how-download-install-patches.html
Spiderweb Software was created in 1994-09.
BMC Software was created in 1980-09.
A new MacBook comes with iLife '09 which includes iPhoto, iMovie, GarageBand, iWeb, iDVD.
Deluge - software - was created on 2006-09-25.
Cacti - software - was created on 2001-09-23.
Siri - software - was created on 2011-08-09.