Do you suspect that it's not working?
Anyway, Ctrl+Alt+Delete, Task Manager, either the Applications or Processes tab (processes IIRC), right click on a task and there should be something there about which processor it uses. Sorry, last time I used a HT-enabled PC was about 3 months ago--I'm a little fuzy on exactly how to do it, but it's in Task Manager.
Maxtor disgraces the six letters that make Matrox.