I recently got a computer company to update my system to windows xp pro,?

but have realised that they have used a pirated version, my pc is not doing too well and is blocking me from using certain sites, e.g signing on to my online banking, going into the cashier on my poker account, downloading certain software etc.

I have also noticed that there is no security centre on the control panel.

The message that comes up when i try on get on my bank etc

is THIS PAGE CANNOT BE DISPLAYED, check network settings,

the same page that you get when your connection is down.

I am using broadband and have noticed that the it is running very slow despite having a fast connection.

I have tried to resolve this problem, by checking the firewall, defrag, fixing broken registry links does anyone have any ideas what could be causing my problems.

the company i originally used have dissapeared of the face of the earth, and as i am disabled and housebound, my pc is my world giving me my social life etc.

so obviously money is a problem.

thanks for your time

I recently got a computer company to update my system to windows xp pro,?norton internet security

Check if there is a red icon at the bottom right of your internet explorer when it doesnt let you on the banking site...if yes double click it, comes up with window displaying cookies for the page...right click the one for your bank. select always accept cookies from this site and close the window. If that doesnt do it......click tools on your IE and select internet options.....select connections tab....LAN settings......tick automatically detect my settings.This should work.