VPN Network

Hello,
I am starting a small coffee shop and am implimenting a POS system. I will be processing credit cards through the POS and have to use a VPN to be PCI compliant for remote access. I also want a website that customers can place orders through with their mobile devices or regular pc's. The problem is that I have absolutly no experience with this and am out of time and can't afford professional installation. I would appreciate it if someone could guide me down the best route for accomplishing this. I have tried to research myself but like I said, I am totally overwhelmed with everything I have going on. Would I absolutly have to have a server to run everything or can I get away without a server to use the VPN?

I am also going to eventually have webcams and would like to be able to monitor them from my PDA. Please let me know if I am going to be better off in the long run to have a server now, rather than wait till later and have to change the infrastructure down the road.

Thank you for your help,

Nate