texture flicker

hai all;
I am facing a problem with texture flickering;that problem occurs when cam is far to those objects then only,if cam is close to those objects then no flicker occured;what can i do for this texture flickering problem and how can i solve this problem.Pls try to solve this problem any one.
Thanks in advance;

This sounds like a z-fighting issue. are the objects close to each other? maybe you have 2 surfaces on these objects close to each other? like a decal on a wall or something like that? a screenshot would help