hi. I have downloaded linux files and added to original D3 windows directory. I also had renamed all files to lowercase.

When i type
tomkiewicz@Tomkiewicz:~/Descent3> ./descent3
or
LD_PRELOAD=/home/tomkiewicz/Descent3/loki_com --line-break-- pat/libstdc++-3-libc6.2-2-2.10.0.so:/home/tomkiewicz ...