sub report in crystal report passing paramater value

[ithought]

hi all, kindly help me experts. i am in hurry to finish my report.
i am using vb.net 2005 and sql server 2000
1. i have two tables which has no link
2. i try to show fields of both table in single report page
3. so i used two sub reports
4. now my problem is i have to pass parameters to sub reports and filter datas
5. finally report should display datas from both tables according to user selected data form datetimepicker which is placed in form
6. i should not get "enter parameter value" dialog box too, should get rid of it.
KINDLY SEND STEPS AND FULL CODE AND HELP ME.
THANKS IN ADVANCE