Thanks for the reply, I just checked that out and unfortunately you can only use up to 25 components in a circuit which is a bit too limited. I do have Pspice but I really like the fact you can select real world components in multisim rather than ideal versions like in Pspice and interact with the circuit while it is running with switches etc.. One of my lecturers at uni said that some text books come with a free copy of multisim, hoping someone here may have encountered one.