新手在安装大型软件时遇到的设置环境变量的问题！

芝士小甜饼

我安装的是Star-cd 4.02 for linux
系统是fedora
安装成功(运行setup后按照指示做了)到了/opt/starcd
然后看到里面的readme写到：
The STAR-CD environment for all machines is defined by running the "setstar"
script. The "$STARDIR/etc/hardware.ini" preference file defines all necessary
environmental variables for hardware setup such as location of compilers and
license files. The "$STARDIR/etc/software.ini" preference file defines the
default settings for STAR-CD and other third party software
he system or STAR administrator MUST edit these preference files to suit
the local hardware and software configurations.

hardware.ini是这样的：

GNU/Linux settings
platform Linux_x86 ABSOFT=/opt/absoft
platform Linux_x86 INTEL=/opt/intel/compiler70/ia32


software.ini是这样的：

# Linux settings
platform Linux_x86 DARSCFD=$DARSCFDTOP/linux_2.4-absoft_9.0a-glibc_2.2.2-dso
platform Linux_x86 DOLFA=$DOLFATOP/linux_2.4-glibc_2.2.2
platform Linux_x86 FLEXLM=$FLEXLMTOP/linux_2.4-x86-glibc_2.2.2
platform Linux_x86 HPMPI=$HPMPITOP/linux_2.4-x86-glibc_2.2.2
platform Linux_x86 LAMHOME=$LAMTOP/linux_2.4-gcc_2.95.3-glibc_2.2.2-dso
platform Linux_x86 MPICH=$MPICHTOP/linux_2.4-gcc_2.95.3-glibc_2.2.2-dso
platform Linux_x86 PROSTAR=$PROSTARTOP/linux_2.2-x86-glibc_2.2.0
group Linux_x86-glibc_2.3.2 PROSTAR=$PROSTARTOP/linux_2.4-x86-glibc_2.3.2
platform Linux_x86 RUNTIME=$RUNTIMETOP/linux_2.4-x86-glibc_2.2.2
platform Linux_x86 STAR=$STARTOP/linux_2.4-absoft_9.0a-glibc_2.2.2-dso
platform Linux_x86 STARLAUNCH=$STARLAUNCHTOP/linux_2.4-x86-glibc_2.2.2


由于我是新手，不太懂这些，但他的意思我是明白的，要我设置成与我的系统相符的情况。问题是我的glibc的版本比他的高，是否可以呢？
我该如何去修改环境变量呢？
如果有人会的话，请帮下我，由于工作的原因这个东西是很需要的。谢谢了