you mean you want to display the temp on the computer?
if yes you need:
temp. sensor(LM 35), amplifier(LM324)
Now you need to send this to your pc:
you have several methods to do this(serial, parallel, usb,daq..)you choose.
then just use labview to acquire and display.
By the way there is an example vi already made for displaying temp.
good luck
there are lots of available info on the net also do a google search