I can’t imagine an office or even a home these days that doesn’t have some sort of wireless router. The bigger question is the age of the current router and the technologies it supports. If it has been several years since the last router was installed or you simply need a new router, check out Netgear Rangemax WNDR3700 Dual Band Wireless-N Router.
This router is pretty loaded with features. It support 802.11 in a, b, g and n flavors so all of your bases are covered. There are two separate radios at 2.5 and 5.0 GHz that can be used to have two separate wireless networks. If you want to use one network for streaming media and the other for data traffic, not a problem. Of course you can tweak the settings to get exactly what you need. If you are looking for a new wireless router, give this one a long look.