protecting ur pc

Some tools to scan for infections.
download :
Malwarebytes anti malware scanner (click here for official download).
A good anti virus
download :
download Avast here.
AVG free (what I use) can be downloaded here.
This is the direct download for Avira anti-virus free version.

If you want The better paid versions of these software, just search for serials on the net.

A good firewalll.
download :
AVIRA firewall premium security is a good firewall. (again, search for some serials.
Or
download :
here is a free version of ZoneAlarm.

Scanning files online before opening them.
Its a good idea to scan all files you get from unificial sites like Rapidshare, mediafire etc. This is such a good idea because then you have many different virus companys scanning your file insted of just your one, and there also free.
Good sites to scan your files on include
Virus total
And
Novirusthanks
(novirusthanks is what you can test how UD your Keyloggers etc are before distruputing them, just remember to click "do not distrupute". This stops the website from sending samples of your file to the virus companys, therefore making them UD for longer)