I’m a hard-wired guy myself, but with the recent addition of my wife’s new laptop (business), I enjoy both worlds without any problems. It’s really not difficult to run some cat-5 cable around the house (trust me on this one, I’m lightyears from being a licensed electrician and I have 4 pcs plus the laptop all happily networked). Anyway, a Wireless-G Broadband Router will afford you 4 hard-wire ports as well as multiple wireless connections, plus it’ll give you a hardware firewall in addition to any software fw you may have. The router is capable of encoding data using 128-bit WEP encryption, but I know little about this and could care less. I live off the coast in Maine, where I’m not too worried about the locals - turkeys, coyotes and deer, eavesdropping.
Anyway, not knowing your situation, you can pick up my router…a Liinksys “WRT54G” on sale this week at officemax for $39.99 (sale + rebate)…with this, you can go wired, wireless or both. As posted above, “wired” home networking is substantially faster, and the wireless cards are gonna cost you as reasonsnotrules pointed out.
Here’s a link: