Baaleos wrote...
Can I set my area's SkyBox to 55, even if 55 doesnt exist in the module itself, but 55 does exist on the clients machines?
Yes. A better option is similar to what another poster suggested - keep the hak in your module (so you can see it while building and testing), but ensure that players have a hak named that. That is one of the major purposes of the cep_custom hak. You can put all your custom stuff in there, and players that have that custom hak, will be able to see it, while others will still be able to log in. This is one of the tricks we use on HG. Note that in some cases this will cause serious problems, but with skyboxes, players without the hak will simply not see one (we do this on HG).
Funky