branch office printer

We have a branch office where the users will use a client vpn to the main office to get email and files etc. There is an adsl router connected to the ISP. No servers. We want to use the printer at the BO in an app. I would need to install the printer on the Print server in the main office.
will this work?
– new subnet at the BO, route, allow print etc traffic through the fw?
or am I stuck with these?
– server at the BO with RRAS or ISA?
– vpn appliance at the BO?
Or any other solutions?