PLEASE HELP, I CANT FIND ANY HELP

I need help really fast. Please answer my question as soon as possible.

I am having internet problems and virus problems. It's all been going one after the other. I have XP I believe.

OKAY PROBLEM:
Whenever I press "Internet" on the desktop, it tells me "This page cannot be displayed. I've tryed so many websites, but will not work. It keeps going to http://if.searchcentrix.com/searchcat.jsp?p=98567&appid=21&type=dns&id=162826192168266&url=if.searchcentrix.com
but I never got the program "centrix".
Okay so I got here by going to My Computer. I put in google.com in the URL of My computer and I got there. I dont want to be going to My Computer everytime I want to go on the internet.
And also, whenever I use the internet, I will get "This page cannot be displayed" for all the pop-ups that I DO want.
Also, I recently uninstalled Ad-aware because I thought it was doing something wrong to the computer(it slowed down the internet a lot and kept freezing the internet), but then I realized it wasn't. The Freezing became more frequent, and I kept restarting the computer. I realized we got a lot of adware viruses(I first thought it was Ad-Aware and was a virus that got detected by Norton Antivirus). I deleted them all, and I got Ad-Aware back. Now this whole internet thing has happened.

SO, please answer quick, because this is NOT MY COMPUTER. It's my friends so please please help. I will be so happy if you can help me

Download 'spybot s&d'. It is free and gets rave reviews for those who go get it.  Easy to install.
Good Luck.

Go to House Call free online virus scanner. Run Scan

Go to CW Shredder.  Follow instructions.

Go to Internet Optins/Programs and hit reset web settings. Confirm what home page you want or just put in blank,again at Internet options General tab.

Reload Ad aware and Spybot.

[R.I.P.]

elizabeth27......It almost sounds like your p/c has a hijacker bug......Open Ad-Aware and get the latest update .....it will remove the hijacker .
Now your problem with the internet.....may be the result of the sasser worm.....are you getting any odd error messages or is your p/c shutting down? Have you checked with your internet service provider in case they had a problem.....

let us know

dl65