to get a site like freelancer.co.uk

to get a site like freelancer.co.uk

HI,
I am looking for a website something like freelancer, where people can post the ads / projects and people can bid them and sellers pay to the site owner and once the job is done, the site pays to the freelancers... with paypal module installed and other necessary options to run and manage the site... any script? a demo may be required before bid may be accepted.. you will have to install and configure the script on the servers too..
modest bidder will be given job right away.

Requirements

HI,
I am looking for a website something like freelancer, where people can post the ads / projects and people can bid them and sellers pay to the site owner and once the job is done, the site pays to the freelancers... with paypal module installed and other necessary options to run and manage the site... any script? a demo may be required before bid may be accepted.. you will have to install and configure the script on the servers too..
modest bidder will be given job right away.