Each instance of svchost.exe process seen in the Task Manager hosts a group
of services. Multiple instances of Svchost.exe can run at the same time.
Svchost.exe resides in Windows\system32 folder, otherwise it could be a
virus, spyware, worm or trojan. To see the list of services hosted by each
instance of svchost.exe, do this: (for Windows XP Professional Edition)
Click Start, Run and type CMD
Type: tasklist /svc
To see the list on a text file:
Type tasklist /svc >c:\tasklist.txt
Look for tasklist.txt file on your c:\ drive
The tasklist.txt will contain the list of Processes and the Services running
under each Process.
For home edition download tasklist.exe at
http://www.computerhope.com/download/winxp.htm . Its the middle download.
Copy the file to Windows\system32 folder