why hello there, eager modeller.
due to yer type of question, I recon this is about how to make a basic O2 setup,
which includes such stuff as using the viewer to PRE-VIEW a model with its textures on.
as stated - walk through the tutes and there ya have it, m8
ya need to use .TGA or .PAA / .PAC textures, and a proper o2/b-dozer installation.
but hey, its all there in the tutes. no need to repeat it here