Crystal report takes lot of time to display

hi k. babu
i hopes that u will solve my problem
i am ketan kshirsagar working on the some project
i am facing the problem at the time displaying data in crystal report.
i am fetching data from sql table t display the data in crystal report vrsion 4.5
it contains more than 3 lakhs records and crystal report will take more than half an hour to display it .what should i do to reduce the time to display these records?
please help me

regards
ketanYou should limit the records that are shown in the report
Did you use index for the key column in that table?
How many users are using your project?