Site Configuration And Management Software Application

hello, i want to install CPanel / WHM cPanel on my dedicated server for some websites i am hosting

do you have support for this

if so, i want to sign up for the service, please contact me as soon as possible

im wondering if anyone els is looking for a Site configuration and management software application. i would prefer it be a free open source script written in php, but if i had to pay, how much would something like this cost can i install it on linux or do i have to have windows?