Vista - 'Local Only' access following virus...

If someone can advise me on how to fix this problem using the info I supply below, it would be much appreciated. I can't be bothered paying someone big bucks for something I could, possibly, fix myself. Many thanks...

The problem:

On Tuesday, I opened a surprisingly convincing phising email. IE7 recognised it as a phishing website and my virus scanner alerted me to the worm Mabezat.B.97. A later complete scan of my system deleted another copy of it.

Anyway, my latop is a June 2007 Acer Aspire 3690 running Vista Home Basic with SP1. After the phishing incident on Tuesday, my laptop cannot connect to the internet with Vista saying the connection is 'Local Only'. It does this both with wireless and when I connect the ethernet cable. I used the laptops of my flatmates to test the connection and it is fine. It worked again on Thursday night but on Friday morning, I was back to square one.

Since Tuesday, I have exhausted my technical knowledge in trying to fix it. I have:

*Repeatedly reset the wireless adapter on the laptop and the router.

*Reset Winsock, Winsock 2 and IPv4.

*Renamed the hosts file

*Deselected IPv6 in the TCP/IP properties and checked the other settings, nothing seems untoward.

*Disabled Windows Firewall and Zonealarm

I haven't however, messed with my registry or re-installed TCP/IP as I wouldn't know how to go about these things.

If anyone knows where to go get decent and honest service or can advise me as to what the problem is it would be much appreciated. Why does it work intermittently would be appreciated too...