More info is required.

I am having a problem connecting to the internet. I have been trying to connect to the internet and it keeps coming up with error 403 (forbidden). I have looked online and all the websites say to download a registry fix for free but can't do it on my laptop as I can't connect to the internet so how do I do this?

Do you only get 403 Errors on your homepage or have you tried other sites?
Are you in fact connected to the internet (wired/wireless?)
Is this a corporate PC?
What is your OS?

More info is needed.

When you connectwired/wireless does it show you as connected?

Pre-Windows 7
START > RUN > CMD > ipconfig /all (post results)
Windows 7
START > CMD (in search box) > ipconfig /all (post results)

Also while in CMD > nslookup google.com (post results)

Look above