Your "some people" are correct. Your DSL service runs at best 1.5Mbps. 802.11b has nominal speed of 11Mbps, but a practical speed of about 5Mbps. 802.11g has a nominal speed of 54Mbps, but a practical speed of about 25Mbps. So the slowest speed is the DSL and that's the speed you will surf the internet at, except for the last few feet in your home. 54g speeds are helpful if you anticipate heavy LAN traffic between your PCs for file sharing or gaming. Otherwise it has little use.