There is a poor guy who wants to study at a prestigious university. I think his name was Raj or Raja.
And there is a girl called Roja or roj, she is daughter of the headmaster in the university which Raj tries to get into.
Raj and Roja meets each other by chatting while they are at the university computer section. Start talking and falling love and the classic things you know.
But her father was going to marry her with an another man. He is completly aware of that this pure guy and his daughter loves each other. So he gives the Raj the responsibility of the wedding (or something like that) to Raj to make everything perfect. Raj cant say anything becouse he respects the person who with special will took him into the university.
I know im really bad to english but i hope somebody out there understood what i was saying.
I think you are talking about DIl hi Dil Me...actually a tamil movie dubbed in Hindi. Nice songs by A R Rahman but not hit in box office as much I can remember.
PS: The hero of the movie couldnt do well in the industry, got hardly any film after that. He committed suicide few years back.