Hardware base Site to Site VPN

Hi! to all TechRepublic.

I just want to know if it is possible to setup Hardware base site to site VPN.

Here is the scenario I am thinking.

There are 7 branch office and a Head Office, I want to have a connection between the 7 branches to get the data from a PC connected to the LAN of the branches and that data will be transmitted to the Head Office Windows 2003 Server, Is there a Hardware VPN that will allow all the 7 branches to connect to the Head Office? I am also thinking of just using a dsl connection between the Head Office and all the 7 branches. Is there a linksys VPN hardware that is capable of connecting the 7 branches or more to the Head Office? Hope someone can help me out on this.