DoubleTalk speed

[Glenn Ervin]

Hi everyone,
I am trying to use a DoubleTalk PC on a computer.
This computer had Windows mE on it, and it later got XP installed on it, so 
I am sure the processor is at least 1GHZ, but I don't know the specs at this 
time.
* Question:
Does anyone know if the speed of the DoubleTalk PC can be adjusted, or it 
needs to?
And a second question, if it needs a utility for this, does anyone know the 
name of the file?
Thanks.
Glenn