My RTL8201 LAN only works with this kext
http://naquaada.infinitemac.com/pub/drivers/network/forcedeth_RTL8201_03EF_only.tar.bz2

Even with this Internet will not work except occationally which is wiered but true!

The only way I was able to get things going was to use the Forcedeth-nockd.kext. Unfortunately, this causes syslogd to run erratically and cripples Console. I tried adding my device ID to the original Forcedeth and this gives me a connection but no internet.

I still sctrach my head about all the posts I see where people are still fighting with RTL8201's... Why go through all that when you can install a $5-$10 RTL8139 or RTL8169 PCI LAN adapter that's supported natively by OSX. There are many PCI cards that work ...

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Running both 10.5.8 and 10.6.4 on my stinking AMD/ATi machine...

I did that, right from the start, when the LAN didn't work. I picked up a Belkin NIC for $7. The problem is I only have 2 PCI slots, and hate wasting one if I don't have to. I've gone back to the NIC.

Hey if those cards work, then that's great! =)

I havent got any space pci slots i have an esata card in one and the graphics card leaves no room for any other

Have you tried a USB connection instead? Also, there are other working kexts out there to make your realtek device connection working. Doesn't hurt to try, =).

I got so annoyed i yanked out my esata card and went to the local pc store and got a lan card that works.But im still stuck on the same annoying screen size with my graphics.

Guys, I came to a sad realization. Seems like RTL8201 is not a very good solution in Mac. I sincerely thank guys who wrote the kext for it. I really appreciate your work. However, RTL8201 is a 'piece of shit' lan adaptor used in 'piece of shit' cheap mobos like mine... So i finally sacrificed a PCI slot for a D-Link PCI Lan adaptor which works seemlessly with Vista and Mac. Problem bypassed! (Not solved). Anyway, i learnt a lot by trying to make it work so i have no regrets.

For onboard VGA with only 1024x768 res. like my NVidia GeForce 6100 in NForce 405, there is no working kext yet... I highly doubt that there will be ever since there are very few cheap-ass fellows like me who will suffer and have the need So i'm intending to upgrade my onboard VGA to a PCIe VGA later if i have some extra cash. Till then, i'll be ok with this default settings...

Thanks all the guys who tried to help me... Thanks a lot!

Yeah thanks for all the help i got, i too had to buy a lan card.