dunno some keyboards have Fn (Function) keys which then allow volume control with the Pg Up and Pg Dn keys. Also some keyboards have a volume control dial on them. As for keyboards without these features I have no idea. Maybe try digging through the apps at cnet.com or something.
yea i was about to say bout teh Fn keys. Em i dont think they are any official keyboard tweak for that keyboard u are talking in particular. but 3rd party programs do the trick i say..i recommend
hotkeys XP found at http://www.digital-miner.com/hkcontrol.html
i used since the early versions and never looked back since. it shows the volume on the monitor to see how loud it gets. i binded mine to windows button + pg up and pg dn
. really cool and u can bind other stuff like open programs and open folders. open anything really.