Hello,My application is a home-based small business office. I have an existing 8 year old wired network with wires throughout the house. System uses cable modem (Mototola SB5101 from Cox), and 3com gateway (3c855) and switch. Currently 8 connections. I am trying to add wireless for use with laptops and mobile devices. But wireless routers don't easily add to what i have. Should I start over, or can I securely add a wireless router to wht I already have? Also, do I need to upgrade my existing wired eqwuipment to get the latest security and performance