I saw it probably after 2005, probably came out a bit before that. The first scene I remember is a man giving the boy who the films centred around a cheque for however much he wants I think. He later goes home and sets it up to get the money on the computer. He enters his name as what the computer is called. Later in the film it shows him with like a castle and all this stuff he bought with the money.
Blank Check (1994)
Yeah thats it
Solved! (And quickly.)