I have a Cable connection 1885.72 kbps (235.715 kB/s) download and 194.768 kbps (24.346 kB/s) upload.The brand is Chello, I guess you don´t know it since it´s only in West and Central Europe. It says Arris on the modem, no number. I did try to forwrad a port but it didn´t do anything. I discussed this with another computer technician today and he said that the connection I use has no router firewall. But if it´s not the router and windows firewall, what is it then that doesn´t let me to dirrect connect? I have this problem not just on Limewire but on Yahoo and Hotmail Messenger too. It never let´s me send a file due to the firewall...which I disabled, but it still wouldn´t work. I did all these steps Limewire says about connection problems:

Go to start -> Control Panel
Open Network Connections.
Right Click on the connection you use to connect to the network
Choose Properties
Go to the Advanced Tab
If your firewalled is Enabled go to step 8
If you want to enable Windows XP firewall check the box (this will enable the "settings" button. If you are not interested in enabling your Windows XP firewall, hit cancel -- LimeWire will not be affected.
Under Windows Firewall Options, Go to the Advanced Tab.
Select internet connection used. (Local area network or the name of your connection)
Hit the Setting Button.
Hit the "Add..." button.
In the description field add "Gnutella"
Set the IP address to "127.0.0.1"
Check the TCP Radio button
Set the external and internal ports to 6346
Hit OK
Repeat steps 9 to 13, except this time check the UDP radio button in step 12.
Make sure the list of services has two items listed Gnutella, and make sure they are both checked.
Click Ok

...and also added Java and Limewire on the list so that it doesn´t get firewalled but none of these things helped. What else can I do?