delay time

I have a small problem. I am sending signals to parallel port
1010101 and step motor is turning due to signals. I write a program
and the motor is turning normaly. But if I use the computer of my
lecturer in university, motor is turning app. 10 times speed. I thing
frequency of pulses are in my computer lower than computer of the
lecturer. It mieans "delay(1000)" by my PC = "delay(10000)" by other
PC. How can I regulate it? Thanks