Upgrading MailScanner and SpamAssassin

[Richard Alexander]

I'm currently running MS(4.20-3) and SA(2.44) on a Red Hat Linux 9.0
server for our company.  I wanted to install the latest release of each
product to try and get a little better filtering.  I have downloaded the
RPMS for MS(4.25-14) and SA(2.61-1).  I was wondering if there was
anything in particular I need to do before installing the new versions?
Which program should be installed first, etc.

Thanks in advance for the help.