Transfer source code to new server

I've recently had a group of developers build an ecommerce website for my business. The code and system is on the developers' server but I would like to transfer it to a different 3rd party Windows server. I need someone to do this transfer including testing and also to advise me on any relevant issues in the process. Since my knowledge in this area is limited I will be hiring 2 people for this to serve as a check against each other. Please provide turnaround time with your bid.