I've gone through the following network cards which FAILED to operate:
(2) Netgear 10/100 w/ WOL NICs
(1) Linksys 10/100 w/o WOL
3Com & Intel has yet to fail on me. I went with Netgear since I heard they were good quality, but the boards I have bought refused to function - the drivers were displayed correctly but the device failed to boot up. They sure do look nice though - they have a nice etching/sticker on the back of the PCB; unfortunately I don't care about the looks, I do care about how the NIC performs and if it works. I tried the NICs on multiple PCs with different configurations.
I'm sure Netgear cards are decent, but it seems the ones I purchased were faulty. Just had to put that in bold & italics to shew away the flamers.
I recommend you purchase 3Com/Intel NICs here off the forums, they go for ~$20 shipped if the seller is decent.
Just my two cents.