libc5 vs glibc

[Elena]

Hi all!!
I have a software compiled with libc5 5.4.46 on linux kernel 2.1.131 but
I want to migrate it to 2.2.9.. is it possible to install libc5 in 2.2.9
and if so.. what should I do???... do I have to uninstall glibc?? can
they (libc5 and glibc) coexist?? how can I make work together??... how
do I know which library is taking my system as the main one??..
Thank you in advance.
Looking forward to hearing from you

Elena
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