Parameters to Crystal Report – VB/VB.Net

Dbase-access/oracle, frontend-vb6/vb.net
based on certain value in a textbox/maskedit, i am scruitnizing records using a query.
example: select salary from emp where salary >[value from txtbox].
i have to export these records to a crystal report.
suggest me, if possible with example
regards
saravanakumar.D