Most tablest have their own driver, since in general they are low 
production things that don't warrant a built in windows driver, check 
with the manufacturer. This is something the Autocad community is well 
aware of, might look there.

Tony Smith wrote:
>> I've looked all over, and can't find the answer on my own, so 
>> I'm asking the smartest bunch of people I know.
>> I'm using Windows XP, and can't use one of the serial ports.  
>> I'm trying to install a drawing tablet that uses the serial 
>> port, but now matter what I try (Hyper Terminal, Tera Term, 
>> PortMon, other programs that use the serial port), nothing 
>> can use it.  The error message I get says that something else 
>> is using the telephony device.  Is there any way I can tell 
>> what process is using the serial port?  I've tried Googling.  
>> About the closest thing I've found is a Microsoft utility 
>> called PortMon, but even that can't attach to the serial port 
>> and won't/can't tell me what is using it.
>> I don't know if the serial port has ever worked properly on this PC.
>> I've checked BIOS settings for the port.  Is there any 
>> possibility that Norton Internet Security is doing something?
>>
>> Thanks,
>> John Pfaff
>>     
>
>
> Check under device manager to see if you even have a serial port.  Disable
> the port, reboot and see if anything complains.  Or delete it and let
> Windows fix it up.
>
> Could be an application like Nero, Quicktime etc trying to connect to the
> net to 'check for upgrades' or whatever the hell it is that they do.
> Occasionally you get a dumb one that tries to fire up the dial-up
> connection.  I had this happen a few weeks ago.  The dial-up connection
> dialog remained hidden, so it was bit hard to figure out.  (This person used
> dial-up to connect to the net, so that aws broken.)
>
> I used MSCONFIG to disable anything under StartUp that I didn't like.
>
> Tony
>
>   
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