DataBase access question.

Hi everybody,
coming right to the point,
I'm trying to display a report on the browser & I'm using java to do that 
job. I have a custom grid component, which can hold 500+ records at a time 
equipped with scroll bars.
If lets say the query resulted more than 500 records being selected I load 
the first 500 on the grid & load the next set only when the user scrolls 
down to that point.
Now comes the problem, if the user scrolls up I'll  need to load the 
previous 500 or nnn records back. And using result sets(I'm using ODBC) in 
java its difficult to read previous records. any ideas of how to achieve 
this. it may be actually a design issue, but I thought may be some of you 
guys might have already experienced something like this....
Remember I'm not much experienced in Java Pgming, so there might be things 
I'm missing.
Thanks a lot,
Prakash.


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