I have just installed the Ubuntu linux on my pc. But I still mantain the
windows installation on it, because I have a dial-up internet connection and
my family is not very familiar with Ubuntu, and I need to share the internet
(actually, I'm the only one who is playing Ubuntu). On windows, I know how
to share an internet connection with the other pc I have here, through a
network (my pc, the one with ubuntu, is the "internet provider"). But when
I'm on Ubuntu, the other pc cannot acess internet, just because I don't know
how to share the connection.

1 - Is it possible to share a dial-up connection from a Linux to a Windows
machine?
2 - How can I do this?

I've searched a lot about this, and I haven't found any tutorial or howto
yet. Actually, I've found a lot, but most of them teaches how to share a
broadband internet connection, which is much more easier. ( I think so =D )

I know it's a hard work for a very little benefit (dial-up connection speeds
sucks), but I hope I can learn very much from this case. And still there
isn't any broadband providers that reach my city, so this is the only
"solution" I have at the moment. If you have any tutorial or if you know how
can I do this, please, reply to this thread.