Upgrade problem from HE to PE

I was having a few problems with my PC so decided to re-
install XP PE over my existing HE. I now cannot connect to
the internet. I had a look in the network connections and
my connection to my ISP has been deleted. Here is my
problem:
When going through the 'New Connection Wizard', I get to
the point where it says "How do you want to connect to the
Internet?" The top and middle options are disabled. I can
only select "Use a broadband connection...". I need to
select "Connect using a dial-up modem" but it's greyed out.

Any ideas? Please help. It's kinda urgent.

Thanks