The sk98lin driver is no more the correct one for D-Link DGE-530T gigabit ethernet card, and probably a whole lot of other cards. The new kernel module is skge. You need to remove a line referencing the old driver from /etc/modprobe.conf, and replace it with skge like this:
alias eth0 skge
Or maybe you could be able to get kudzu to do that for you, but I do not know how.
Hope this helps,
Jaakko Hyvätti
http://www.iki.fi/hyvatti/