Hi Jim,

Yes, it is easy. I just installed Linksys WRT54G. I assigned to it the MAC address of my existing LAN card, and the switch went transparently for my cable modem. So far I use only my wired network, and programmatically disabled the wireless throught the router web interface. There you can also configure the list of MAC addresses of the PCs you want to communicate to wirelessly, and anybody else will be rejected. For example, you can download and look at the manual for this router from:
ftp://ftp.linksys.com/pdf/wrt54g_ug.pdf

The configuration is easy. Other routers work basically the same way.

>I'm looking to get a wireless router.
>
>My understanding is that I can simply, after configuring the new box, move my wires over and they will continue to work as now.
>
>BUT I have concern with regards to "security" on the wireless part of things. Specifically, I'm not interested in becoming an access route to the internet for anyone nearby who has a wireless setup. Can this be prevented and, if so, is it a relatively easy thing to do?
>
>I'm also not at all interested in using others' setups as access by myself. Is there some way for me to know that it is **my** stuff that is being used by me.
>
>Any advice appreciated.
>Jim