[CentOS] MIgrate/Upgrade from Centos 5.4 32bit to Centos 5.4 64bit

Tue Jan 5 15:46:40 UTC 2010
Oliver Schulze L. <oliver at samera.com.py>

It is posible to do a simple procedure to upgrade a Centos 5.4 32bits 
(i686) to
a Centos 5.4 64bits(x32_64)?

I was thinking about an upgrade or install without formating.

I will have a current backup before doing it.

Any advice/tips is welcome.

Many thanks
Oliver Schulze