[asterisk-users] upgrade

[Thomas Perron]

i am running 1.4.37 and am hosted on Rackspace.
I feel like a took a step back by using the Cloud server service since
I am having a little trouble proving that my basic configuration is
working.
Nevertheless, I want to upgrade to 1.8.
I use Centos 5.5

Anyone know of a good link that can help please?  I searched Google
and got confused by the options.

Upgrade to 1.8.  How please?