library lost - need help, please

[Peter Mickle <mickle@panix.com>]

hello readers,

NEW USER question/problem, need help if possible. in trying to solve one
shared libraries problem, i unintentionally removed the following library:

	/usr/lib/gcc-lib/i486-linux/egcs-2.91.60/libstdc++.so

i don't know how to "reinstall" that file. i do not know the exact package
to which it belongs, searching at http://www.debian.org/distrib/packages
for "libstdc++" returns:
	libstdc++2.9-dev2.91.60-5;
	libstdc++2.8 2.90.29-2; and
	libstdc++2.9 2.91.60-5.

i can't "install" any of these packages through dselect because they are
all marked "installed; install (was: install)", and when i try to install
through apt-get, i get the message "sorry, libstdc++2.9-dev is already the
newest version. i can download "libstdc++2.9-dev_2.91.60-5.deb" into my
/tmp directory, but then i don't know how to "execute" the ".deb" file, or
even if i should.

i have exhausted my self-help efforts and i will really appreciate any
help or direction, that way i can get back to solving the problem which i
was solving when i killed the needed file.

thanks very much,

peter