crystal reports

Question

Hi all,
I am making an application on crystal reports.Now what I want is,I want to search my reports in a given criteria.Let's say I have two textboxes.in one textbox i will enter my starting record and in another I will enter my ending record.The moment i click on search,all the records between these entered records should be displayed.
Please give me the solution.It's very urgent
Regards
Vineet