missing gl liberty how to fix!!
 

Hi ,I had been running some program such as wine ,superkaramba and I ran into a few problem laterly :in shell it said that I am missing GL Library
"Loading required GL library /usr/X11R6/lib/libGL.so.1.2"
I try internet net search but it came back with useless result:I try GL library and download library but none of them seem to be in help:
Can anybody help me find this file libGL.so.1.2 or fix this problem;
And another problem is that (I am using mandrake 9.1) when I try to instill RPM upgrade some of them seem to work but most of them said that it's having confilct with older version and when I try to uninstall the old version .It run into dependsey problem and could not uninstall ,I even try rpm -f filename.rpm but it didn't help either .

help me ;
thank;