Thanks for Mark's recommendation as given in the link in my previous post,
my PC is now normal. Computer in Device Manager now display ACPI
Multiprocessor PC and CPU Usage History of Task Manager is now displaying 2
CPU windows.

To summarize, XP Home do support Hyperthreading although it only support 1
physical CPU. To use Hyperthreading, enable HT in BIOS so that OS can
detect the CPU and install the correct HAL during OS installation. In case
the MP Kernel was not installed, you can either repair it by repair
installation of the OS again or follow the recommendation from Mark.

As many other people said, you don't need XP Pro unless you need the extra
networking and security capability that XP Home doesn't has. Of course you
will need XP Pro if you have a multi-processor motherboard running two
physical processors.

Bye!

js1662

"js1662" <js1662@hotmail.com> wrote in message
news:OtDdf.195564$ir4.113681@edtnps90...
> Hi, I found the following link that suggested a workaround to re-install
> MP Kernel. Should I do that for my XP Home? Will that corrupt my OS if
> XP Home doesn't support MP Kernel?
>
> http://mindfulmusings.net/weblog/200...g-motherboard/
>
> js1662
>
> "Leythos" <void@nowhere.lan> wrote in message
> news:qIudf.201834$lI5.98997@tornado.ohiordc.rr.com ...
>> In article <zeudf.122253$yS6.44137@clgrps12>, js1662@hotmail.com says
>>> > XP Home does NOT support multiple physical processors. HT is not MP,
>>> > that's why it won't use the Multiple Processor kernel.
>>
>> My P4's are all hyper threaded, running XP Prof, and they all use the MP
>> Kernel, just the same as my Dual and Quad CPU systems.
>>
>> --
>>
>> spam999free@rrohio.com
>> remove 999 in order to email me
>
>