Can I detect the number of CPUs in a multiprocessor machine?

[Ythan]

I just started working with the NSIS and I love its power and flexibility, but I have a question. I was wondering if there's any way to detect the number of processors in a computer. It seems like it might be possible using the System plugin, but I can't figure out how. If anyone has experience in this area, I'd sure appreciate any help you can offer.

Thanks in advance!

-Y