Like spoon has already stated Reh Hat Linux 9 is old and no longer supported by Red Hat, supported ended the end of April 2004. Upgrading the libstc++ libs are possible, but it takes alot of work. You need to also upgrade the glibc libs. For this you are basically on your own, download the source rpms for glibc and all the other needed libs and build your own.
You may have luck using the rpms from Fedora Core 1;
I will tell you now be very, very sure of what your doing, updating glibc is one sure way to mess-up your system. You might want to try installing a different (earlier) verion of the mysql administrator instead.