How do I get rid of the trojan csrss.exe?

[cookies9]

it's making my computer go slow it's using up my memory and my superantispyware, avg or spybot can't detected it even though it's in my system*2 folder and it's showing on my windows task manager

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[gordo]

csrss.exe is supposed to be running in system*2. If it is anywhere else, it is malware

[rayonkerion]

i have use latest version of * anti virus even though the autorun.exe virus is not remove
please help me