Appletalk control panel ethernet option missing

I got a MacIIfx running system 7.5.5. After updating to 7.6.1, when I
open the appletalk control panel to switch to Ethernet, I've only the
choice between modem and
printer port, the ethernet option is missing so I cannot access my
ethernet-TCPIP network. I tried everything I found in MUGs, newsgroup
and the apple site. This includes
format the hard-disk, zap PRAM, clean install of system softwares,
Opentransport update to 1.1.2, Network installer 1.5.1, CFM-68K runtime
enabler update, setting
serial switch to compatible, rebuilding desktop. This looks like an
hardware problem with my ethernet card but it's not the case since when
I got the computer everything
was fine (under 7.5.5). I tried to come back to 7.5.5 (I also tried
7.5.1 and 7.5.3) but the problem remains the same. The craziest point of
the story is that I can fix the
problem if after installing the system (7.5.3, 7.5.5, 7.6 or 7.6.1) I
replace the system file (and only this file) with the "old" one
originally present when I got the
computer. The probl
em with this solution is that since I swap the system file without
installer, my system is unstable and very, very, very slow (need to
click 5-10s on menus before they
pop-up). What's going on? Any suggestion? HELP!!!!!!!!!!!!!!
seroudeAsked:
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demullerCommented:
A few comments:
I had problems with 7.6.1 and reverted to 7.6...
You ethernet card and driver are confirmed OK?
Can you run OT 1.2 and OT/PPP?
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rickyrCommented:
If you can't see ethernet in the Appletalk contrl pnl?
then try looking in the network contrl pnl, thats how I have to specify my network type.
regards ricky
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karl_sCommented:
The actual answer to this is that you are missing your ethernet driver from your new system file... the easiest way to do this is to:
1) reinstall your system SW then:
2) reinstall OT-1.1.1 then:
3) reinstall OT-1.1.2

If this fails, get back to me...
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karl_sCommented:
pls. note - in my previous comment, the order is *VERY* important...
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dlleonCommented:
Have you attempted to reinstall the ethernet driver for your card? If I recall correctly, the IIfx does not have built in ethernet. Therefore, when you installed the new os, there was no ethernet driver for ot. My suggestion is to simply reinstall your ethernet drivers from the disk that accompanied your e-net card.
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rbrCommented:
I had the same problem because the Installation of 7.6.x removed my ethernet card driver. After I reinstalled it everthink works fine.
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