I am in the process of upgrading all my tech at home and I really want a VPN set up or an equivalent to fit my needs.

I have been searching the interent etc to find a decent solution that will fit my needs and there are several options.

I was wondering if anyone here has a VPN setup at home/or small business and what type it was, also cost/pitfalls etc.

I was thinking about going down the hardware route rather than the software options, general set up and what i want to achieve is below, any advice would be greatly apprieciated.

Equipment:

2 x Desktop PCs - one for gaming/design, one for office work and running VMs (to test and use Ubuntu etc)
1 x NAS (yet to buy - but have been looking at Seagate Armour Black 400 4-bay - very sweet!)
2 x Laptops - hence the need for Wireless

I want to/requirements:

1) Be able to access the files on the NAS (from anywhere) - without PCs running
2) Be able to remote access (and control) the two desktop machines (and wake on LAN)
3) The router needs to be Gigabit ethernet and Wireless ("n" will do)
4) I will also need one switch - does this need to be "VPN" or pair with the router or can it be an off the shelf job?
5) Also a bonus would be able to do the first two points from my N900
6) I don't really want a server left running while I'm away (power requirements) which is why I wanted the hardware (VPN router) rather than the software solutions.

I have:

Sky ADSL broadband (UK) - does anyone know of any issues using VPN and all the stuff that comes with that (tunneling etc) while using Sky broadband?

I was thinking:

Wireless VPN ADSL Router (there are a few if you google it) - but the Cisco "small business version" requires you to install QuickVPN on the remote machine - which isn't a problem for my laptop (while travelling) but I wouldn't be able to use my N900

The others (that aren't cisco) require a web page login - does anyone know how this works and what the limitations are? They also offer some other options like IP access but to be honest, I'm not sure how that works when you are remote? Is that option for fixed bases, like other offices offsite?