Problems after installing networking 1.4 Upgrade on Windows 98

Hi,

I installed the networking 1.4 upgrade for Windows98
(normal edition). After this upgrade my normal TCP
connection to other computers either locally or on
the internet (through my router) does not work anymore.
There is no error
message other then can not reach home when I try from
Internet Explorer. Other programs like ftp or telnet
don't work neither. I have a fixed IP address on this
computer, fixed DNS server.

I tried to fix the problem in the following ways without
success:

- Deinstall the upgrade
- Reinstall the upgrade a second time
- Reinstall Windows 98 from the CD ROM
- Delete Dial up networking with the Add/Remove Programs
and reinstall.
- Looked through the registry if there is anything odd in
there.

I think I use a standard version of the TCP libraries
including winsock. I am very close to restart from scratch.

Any of your expert help is welcome.

Jorg