installing new kernel..

["Umang Natani,NM Chennai" <umangnatani msdc hcltech com>]

hi all,
i am having Redhat Linux 5.0 with kernel 2.0.32 installed on one of machine.
now i want to install the latest kernel 2.2.2 which i have downloaded and
unzipped and untarred in /usr/src directory.but after untarring i didn't
find any new directory, only previously existing directories (i.e.
linux-2.0.32 and redhat) are there.  now what should i do to bring that
kernel in effect? 
Umang