I don´t paste all the log beacause it´s very long, but Gmer found these:
GMER 1.0.12.12027 -
http://www.gmer.netRootkit scan 2007-02-21 13:51:40
Windows 5.1.2600 Service Pack 2
---- System - GMER 1.0.12 ----
SSDT \??\E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys ZwCreateFile
SSDT \??\E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys ZwEnumerateKey
SSDT \??\E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys ZwOpenProcess
SSDT \??\E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys ZwQueryDirectoryFile
SSDT \??\E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys ZwQueryKey
SSDT \??\E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys
---- Services - GMER 1.0.12 ----
Service E:\Documents and Settings\Nicolas\Datos de programa\hidires\m_hook.sys [MANUAL] m_hook <-- ROOTKIT !!!
---- EOF - GMER 1.0.12 ----