Outpost has a bunch of Unident network hardware for cheap. Just a few examples:
Uniden PCW100 802.11b USB Adapter - $4.99 after MIR
http://shop1.outpost.com/product/3882027
Uniden PCS500 5 Port Fast Ethernet Switch - FREE after MIR
http://shop1.outpost.com/product/3881977
Uniden PCS800 8 Port Fast Ethernet - $4.99 after MIR
http://shop1.outpost.com/product/3882047
Uniden PCN200 10/100 PCI Adapter - FREE after MIR
http://shop1.outpost.com/product/3881987
Uniden PCN100 10/100 USB Adapter - FREE after MIR
http://shop1.outpost.com/product/3881997
Uniden PCW300 802.11b PCMCIA Card - $9.99 after MIR
http://shop1.outpost.com/product/3882037
Uniden WNP1000 802.11b Wireless LAN Access Point - $0.99 after MIR
http://shop1.outpost.com/product/3881967
There's a lot more that's on "pre-order". This is the stuff that's in stock. Keep in mind the rebates are 1 per household so don't go and order 20 NIC's or something. I ordered a USB wireless adapter and 2 day shipping was less than $6.