I eddited my prior post I made some minor mistakes, try re-reading them.

the zeros in your routing tables need to be filled in or your still sending your requests to 0.0.0.0 wich is the default gateway for the local machine wich is not your windows box it is the linux box.

How should that default line look like please and how do I change it exactly without getting any errors? Thanks.. see my upper post..

SainT

/sbin/route add default gw 192.54.0.10

I made up the 192.54.0.10 part but what ever it is, you want that to show up as default when you type in route by itself.
you may also have to delete it first if it alread has a static route given to it
your current configuration would probably require to first delete

default BlackBox 0.0.0.0 UG 0 0 0 eth0 by typing

/sbin/route delete 0.0.0.0

this is will probably get rid of an error when you add the route to the windows box as a gateway

right now you also have a static route to your local network and localhost, this is fine
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.1 * 255.0.0.0 U 0 0 0 lo

Still getting this:

[root@Pingvin network-scripts]# route add default gw 194.249.64.207
SIOCADDRT: Network is unreachable

how are the computers physically connected?

are you using use dhcp and set up a connection between the windows host and the linux box? you gave it the name of blackbox?

you can get a ping reply from the windows box?

I have got that error and usually it was because I was trying to route to the wrong address number.

The computers are connected to a 10 Mbps hub via UTP cables.
I'm not using DHCP but static IPs instead as stated in my first post.
I can successfully ping all PCs on the LAN.
I get that error when I try to add the IP of my Internet Service Provider's remote gateway.

SainT

The computers are connected to a 10 Mbps hub via UTP cables.
I'm not using DHCP but static IPs instead as stated in my first post.
I can successfully ping all PCs on the LAN.
I get that error when I try to add the IP of my Internet Service Provider's remote gateway.

why do you want to add the ip address of the ISP's Gateway? This should be passed to you from the Windows box that actually has the connection.
via ICS

you want to add the IP addess of the windows Host it is the gateway to your ISP's gateway. Is this what you are doing?

so you gave your windows machine an ip address of
194.249.64.207

if this is the address of the ISP's gateway then that would definately explain the network unreachable error.

I finally got it to work! Thanks for ALL the help! Really!

Oh man, the error was on the XP side! Now I can finally go to bed!

Cheers
SainT