Remote access to files - single storage point - best way of setting up? VPN??

Hi,

I need to setup for someone a method of accessing their files remotely. They told me they have heard about a "virtual server" on which their files are held and it makes it easy to access the files from anywhere in the world.

But although this in theory is a viable idea and I do not think it is actually that practical and do not know of such a service in place that people use and rely on well.

I am thinking that the best option for this is to realistically in the actual office setup a basic NAS device which stores all the essential files, and then setup VPN access to the office.

Does anyone know of any other options that are realistically a good way of accessing files remotely? Is there some "virtual server" available as the person I am helping tells me he heard about it and that it is very easy, very reliable and not an excessive cost, but I do not know what he could be referring too.

On a related point, if we do go for a VPN solution, normally I would say something like a Draytek Vigor 2800. However he just purchased a MIMO N Netgear Wireless router and so does not need all the

Is there an appliance out there that just adds VPN to your network at a good cost? How can I add VPN to an existing network without replacing the hardware he has just purchased.

Thanks.