>>The PC I use for programming them has over a
>>hundred COM ports so far. I am not sure when Windows will run out ;-)
>
>XP supports up to COM254 I think, so you have a little way to go yet!

Shucks, where is the problem? Just go into device manager and remove the 
appropriate driver, then they all disappear, and you restart next time you 
plug one in. Been there, done that, but not because of the number of ports 
configured. 

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