At Amazon.com . All three rebates can be on the same form. No sales tax in most states.

Search for :
“WGT624” (Super G 108 Mbps Wireless Router) $61.74 – 20 MIR = $42.74
“WG511T” (Super G 108 Mbps Wireless PC Card) $42.74 – 10 MIR = $32.74
“WG311T” (Super G 108 Mbps Wireless PCI Adapter) $52.24 – 10 MIR = $42.24

Not as inexpensive as the recent AT&T deal, but some prefer a more “established” wireless brand.