problems with libstdc++-v3

[Caleb Moore]

After installing gcc version 3.1 I have a little problem with the 
standard c++ libraries. After a relitivly conventional install on an 
i686 running red hat linux 7.2, c++ programs using the standard headers 
will not compile. It seems that in g++-v3/bits/basic_file.h there is no 
definition of__c_file_type. This is causing an error on line 52 of 
g++-v3/bits/basic_file.h when __basic_file_base tries to inherit from 
it.
I tried to uninstall the new version in favour of my 3.0.3 version but 
it does not work. It keeps telling me that it needs libstdc++.so.4 
which is needed by libstdc++.so which I find quite unlikely as 
libstdc++.so is a symlink of libstdc++.so.3.0.2!
Does someone know how I may fix libstdc++ version four or revert 
libstdc++ to version three