Evil csrss.exe detected (among other devils)

Viruses and worms
1

Aloha!

My beloved laptop has started showing problems lately, so I decided to run some checks.
I defragmented it, runed analysis (with avast!), downloaded Ccleaner and run it.
After all that, it still showed problems so I checked the running programs and found several that I think are viruses or spyware.

csrss.exe (no description, and there are two of these in my computer and that is not normal)
hkcmd.exe (description: hkcmd module)
igfxpers.exe (descrition: persistence Module)
igfxsrvc.exe (igfxsrvc Module)
igfxtray.exe (igfxTray Module)
winlogon.exe (no description)

I have a Dell Studio 1555 with windows 7.

Help? Please?

2

Are or did you get any avast alerts on these ?
If so what malware names were given.

What are the locations of these files ?
e.g. file name, location and malware name.

Two instances csrss.exe in one in ‘C:\WINDOWS\system32’, the other identical (6114bytes) in ‘C:\Windows\winsxs\x86_microsoft-windows-csrss_31bf3856ad364e35_6.1.7600.16385_none_58ba39fb456943bd’ (on my win7 netbook 32bit starter edition).