Bump Mapping Help

[anhdung86]

i create a dot3 bump mapping for one of my actors. But when i place this actor to my level, it's very dark in some faces (which are not radiated by light). And i didn't see this model 'glossy'. Anyone help me about this problem, please!




This is my actor's texture:
http://www.mediafire.com/?zjegjiridni

[metal_head]

Isn't that normal? It happens the same thing with my models when I make a dot3 bump mapping.I think everything is OK with that.I may be wrong(I havent played a lot with the dot3 bump mapping honestly)