Is there a PC that runs without any Microsoft products?
Check out Linux!
Generally Microsoft products must be paid for either through the Microsoft site, or as software from an electronics store. However, if one already has a Microsoft product, sometimes the Microsoft site will allow for free updates directly through them. Any other means of obtaining free Microsoft products would be illegal.
Can you have a microsoft-based network without any wins server on it what are the considerations regarding not using wins?
How do you open a openoffice file in Word or any Microsoft program without having the open office program on your computer?
Well, given the HUGE amount of computers there are carrying Microsoft programs, it is quite probable that SOME terrorists are using Microsoft products. There might even be Microsoft vendors who support the terrorists. But that there would be any corporate level support or engagement seems like very, very unlikely. That kind of thing is far more likely to be a mean rumour from someone who doesn't like Microsoft.
Could you tell me of any small business software products that are geared to home-based enterprises?
Microsoft and Linux have no direct relationship. Microsoft has frequently attacked the reliability and cost effectiveness of Linux in order to promote their own Windows Server products. They do not release any software for Linux directly, but have made several "deals" with various commercial Linux vendors, such as Novell, Xandros, and Linspire, to license Windows media codecs.