My girlfriend recently got Comcast high speed (the budget pack), and I can't get her computer to connect to FW. She has no third party firewalls installed, she had an outdated Norton firewall but I removed it. I even removed all Norton related regristry entries. I disabled the Windows Firewall as well. She can connect to torrents through utorrent, but FW will not establish a connection. She is using a rental modem, which I thought may have came with a pesky hardware firewall, but this isn't the case. I hooked my laptop up and FW connected instantly. She is running an old eMachines (I know...) with XP service pack 2. I believe her RAM is 256 but I'm not sure. I'm thinking Norton may have closed FW's preferred ports but since Norton is gone I have to way of checking or reconfiguring this. I made the mistake of mentioning that this may be fixed by re installing Windows. I told her I would have to back up her huge photo and music collections (50GB+), and that all seems like real a real PITA. But I want to get this working just so she'll shut up about it.

Did you solve this problem? If not, let's get a few more specifics. System details - help us to help you (click on blue link) (same applies for FW.)

i keep trying to do all the stuff required but it doesn't seem to work!!

Try the fixes in the thread below. Things there refer to LimeWire but it's the same for FW (for example the preferences folder will be in the same place but will be called FrostWire instead of LimeWire & you can use the gnutella.net file in FW)
If LW Will Not Connect

If nothing there helps, post back with your system details (see for thread for more info about the details that we need).

Limewire not fully connected to internet. How do you fix this System Mac 10.4.11 Internet Cable Norton Antivirus

Limewire says it is unable to connect fully to the internet so search does not work.
I have a Mac OS 10.4.11, 1.6Gb ram, 30GB hard drive, Norton Antivirus 11, cable modem. The problem started after the anti-virus was put in

Disable the Norton (you're on OS X, so it's not really needed) and see if that helps.