Can I switch a rh6.2 in a rh72 without an upgrade?

[Bruno Negrao]

Hi all,   I have an redhat 6.2 that is my e-mail(qmail), www(apache), radius server and it is now not working that properly.   So I'd like to update its packages to the packages contained in the 7.2 cd. I'd like to know if I could install these packages gradually, without making an upgrade process. If I can make it, where do I begin? What packages do I need to upgrade first? which would be the right order?     Thank you, -------------------------------------------------  -- Bruno Negrão -- Suporte  -- Plugway Acesso Internet Ltda.  -- (31)34812311