Ok, I have been upload happy.... Here are newer RealTek 10/100 ethernet network drivers for the GCT:
(The one posted earlier was a beta driver, these are newer final release versions)
10/100 Windows 98 driver
10/100 Windows ME driver
The drivers appear to be the same version but one is for Window 9x and the other for Windows ME, I don't have a ethernet GCT right now to try them out. These driver were updated 5-4-2001
Also RealTek supports about every OS you might think of for this chipset, here is the direct location to their website to download other OS drivers (Win CE, Imbedded NT, BeOS, Mac, Novell, OS/2, Java, QNX, Solaris, SCO Unix, Ndis2 for DOS, RPL)
http://www.realtek.com.tw/htm/download/cgi/DLd1.cgi?model=RTL8139%2F810X+Family&type=2