SP2 and Internet Connectivity

After making sure that I was not connected to the internet in any way. I
formatted my hard drive and installed XP Pro on my computer. I installed My
Firewall and My antivirus and then I connected to the internet. I at that
time was able to cruise around with not problems. I then downloaded SP2 and
now I have no internet access. I ran my spybot and my adaware and there was
nothing to be found. I then rebooted into safe mode and rean HiJack This and
it found nothing either. Does anyone have an idea as to why I lost my
internet connectivity as soon as I downloaded and installed SP2?
Thanks for your help in Advance
Benjie

The TS steps I have done so far are.
1) I have searched the microsoft Knowledge base and it only had 1 article
which I tried and the was manually configuring the firewall to accept the ICF
connection.
2) I disabled the firewall and that still didn't work
3) I shutdown my DSL modem and then the computer and turned the power on the
modem then my computer and there is still no connectivity.