How upgrade RC3->RC4

[Andrey A. Jelnin]

I use rpm-based distributive. 
I download new SRPM's - how i can upgrade installed RC3 to RC4 - in one ore two command ?
Till now i remove's old rpm's from system
and buid&install SRPMS in right order ...
But it's too boring - do it by hand for all SRPMS 

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Written under -< Spiral Tower - Chiquitita >- playing in xmms
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Jaa mata,
Администратор веб-узла ОАО "Гипросвязь"      Andrey A. Jelnin aka BsoD 
e-mail: <bsod at gs7.ru>
jabber: bsod at jabber.ru
icq: 112600159