Here is the shortcut to use for HLDS to update/install the red orchestra server files:
hldsupdatetool -command update -game redorchestra -dir .
You can get the update tool from:
http://steampowered.com/index.php?area=getsteamnow
hldsupdatetool -command update -game redorchestra -dir .
You can get the update tool from:
http://steampowered.com/index.php?area=getsteamnow