well if its your final year of university you should have had some sort of experience with this stuff...
it would probably be difficult to do without prior experience in electronics, this seems like a project suited to someone in an electrical or computer engineering major.
youll need to research about microcontrollers and how to program them. youll need to learn about transmitter and receiver circuits for whatever transmission protocol you decide to use, youll need to learn about wireless transmission of digital signals if you do it that way, receivers (again, digital signal receivers if you do it that way), and ways to check for errors and resend lost bits...
actually now that i think of it a digital signal probably isnt the way to go, you probably just want to transmit some very specific frequency or frequencies and if you want to look at them with a microcontroller than use ADCs and DACs or something, FFT with an FPGA to look at the freq. spectrum, if it doesnt match up for more than a half second then trip the alarm.
its a fairly complicated project, if you do it wirelessly. if you dont even know where to start, or if none of the above made sense, this project probably isnt something for you...
im not really getting the point of the project though. the laptop owner has a little buzzer somewhere on him, when the laptop goes more than 2m away from the buzzer then it sounds. but if you're only 2m away from your laptop then wouldnt you notice it being stolen? and what good will a buzzer do? by the time you turn around the thief is already running out the door.
and if you DONT do it wirelessly, then the laptop will just be attached to you by a wire, which is very impractical, and at that point you might just as well tie yourself to the laptop with a string.