Network Configuration MS Small Biz Svr 2003 + Netgear FVS336

I am currently running MS Small Business Server 2003 R2 behind a NetGear FVS336G firewall/router. It is currently unstable and I am unable to take advantage of all of the features. I have a second office with the same firewall/router currently operating as an XP peer to peer network. I have a 2nd server box that can run either MS SBS 2003 R2 or Windows 2003. Both locations have wired and wireless lans. The primary location is connected to the internet via a cable modem with a "fixed" dynamic address linked to the MAC address of the modem. The second location has a DSL connection with five fixed ips and a cable connection with a dynamic ip. Both office have 5 or 6 clients running XP with both have a couple running Vista. My goal is to have access to all of the SBS features, exchange, sharepoint, internal webpage.... I want access via the wired and wireless lan as well as remotely. I also want the two offices connected as if they are on the same lan. I would like to work with the hardware and software already in place, but am willing to make an investment in additional items for significant function and performance gains. I have built pcs, made and installed the cables, installed the server and client software.... I can follow detailed instructions. The winning bidder will have to provide detailed instructions for configuring both routers, both servers and client machines.