Milicious program dectected (virus help) cant even open up internet?

terenkleon

Distinguished
Dec 15, 2011
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I got a virus on my laptop.I got this laptop from my sister and I've had this laptop for 2 years and never had a probem.I keep getting this pop up saying Security Warning "Malicious program has been detected click here to protect your computer".
I go to Security Central scans my PC and it detects 250 threats like
W32/blaster.worm

TrojanDownloader:Win32/Bredolab.X

Mal/Generic-A,Trojan Agent

Backdoor.W32.Scrab.p

W32/Child-Porn.PROXY/Server .........Child Porn???

Email-Worm.Brontok
I also get a FireWall warning message saying "hidden file transfer to remote host has been detected"
"Security Central has detected a leak of your files though the internet.We strongly recommend that you block the attack immediately"
The details says the

Remote host tranfers IP

Remote user computer name

Username

IP-adress
Security Central wants me to block it but wants me to pay for a subscription.I tried using this 2006 Norton Antivirus CD but it won't let me nor will it let me open Spybot Search and Destroy.A message keeps popping up saying "Spybot can not start.File is infected by W32/Blaster.worm.Please activate Security Central to protect your computer"
What should I do?Is there a way to fix this without paying 50-70 bucks for the subscription?