Just saw too many posts about viruses and malwares. Here are the three free apps I would recommend

Hope its handy for all, happy and safe surving

1. Avast Virus Cleaner

http://www.avast.com/eng/down_cleaner.html

 

2. PC Fixer 2.6.9

http://download.cnet.com/PC-Fixer/3000-2086_4-10835072.html

3. Spybot

http://fileforum.betanews.com/detail/Spybot-Search-Destroy/1043809773/1

I have Trend Micro and Spybot and they are the best.
I hate Norton.

Which one's the best? ( and free ? )

I have Advanced System Care 3 and its awesome....so I would recommend it....You can download it for free here

http://download.cnet.com/Advanced-SystemCare-Free/3000-2086_4-10407614.html

and they do have some feedback....you can read it before downloading....

Good Luck

I scanned my laptop using Spybot and it showed be the number of viruses but i could not delete or remove these infected ones, what should i do, any help please!!!

i found malware bytes antimalware to be a good thing against some trojans and spywares..and it is totally free for scanning though you will have to buy for real time protection..still i must say very good..as it doesn't each up ya resources...
http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html?part=dl-10804572&subj=dl&tag=button

mailwarebyes

nccleaner

is the best

I guess i am finding sajha very useful now-a-days. I was able to do find help for my homework and now i  am finding something useful for my virulated laptop and desktop.
Thank you very much sajhabasis.