PHP 5.1.x and MySQL 5.0.x upgrade

[delinhabit]

I need to upgrade PHP and MySQL packages on my server to PHP 5.1.x and MySQL 5.0.x.
I tried to install from sources and it didn't work. I could't start MySQL server and psa anymore.

My System:

# uname -r
2.6.9-55.0.2.ELsmp

# cat /etc/issue
Red Hat Enterprise Linux ES release 4 (Nahant Update 5)
Kernel \r on an \m

Plesk 8.2.0
PHP 4.3.9
Mysql 4.1.20

Please Help!
I need it done ASAP!
Thanks!

[irzyxel]

centosplus or atomic repositories ...

[delinhabit]

I read about atomic repositories bu I don't hav yum installed and I couldn't install it cause I'm getting some nasty errors.
If you culd give some detailed explanation on how to do this it would be great!

Thank you for your time!

[atomicturtle]

wget -q -O - http://www.atomicorp.com/installers/atomic.sh |sh

This will install yum on a RHEL4 system, or if you want, convert RHEL4 to CentOS4 (handy if you dont have an updates subscription), and then set up the atomic channel on the box.

[delinhabit]

I successfully upgraded my box. Thanks for advices.