556032 Server Admin Needed - OpenVZ & XEN Work

I need an experienced server admin to help us change IP's for VPS's. This is an extremly easy task, but we want to ensure its done by someone that is very experienced. We are changing the IP's on our servers and our openvz and xen VPS's need to reflect these new IP's so you must run a script or manually go in and change the IP's in the host files etc. A lot of clients run cPanel too, so you need to use a method so the IP in their nameservers and dns zones change as well so there is no conflicts when they update their nameservers. There is a total of 20 openvz vps's and 5 xen vps's. We will need this done at EXACTLY 9:00 AM PST on this Monday (3/12). Please post your level of experience and also you must speak FLUENT ENGLISH.