Here is a the dialogue from that actual scene.
SJ: "Look here, Ive found this 486 motherboard behind the cushion of this futon sofa bed that we just carried up here into this converted loft area"
BW: "And what do you intend to do with that, man?"
SJ: "Ive made a computer casing with 'Mac' on the front an' that. And Ive got a 4mb hard disk drive, a cd player and a box of spare memory chips and a Soundblaster card .. and .."
BW: "For chrissakes, Steve - thats the most preposterous idea I've ever heard .. it'll never catch on"
SJ: "Perhaps not intiially - but once we get around to the iPod, iMac and eventual iPad production in full - THEN world domination will be ours, possibly"
BW: "Hmmm .. well, now you put it like that, alright then - where's our nearest Apple store?"
Ok - historically the script isn't 100% accurate but lets not stop that from ruining a great story ... everybody ready? Aaaaand .. action!