need Help in Crystal Report

Hi All

can anybody suggest me how to work with crystal report with vb by coding.
I have worked little bit using design time in crystal report.
I want to do the same by coding.
can anybody help me in this regard with a sample or by any beginners link.

Thanks

use Crystalreport Control
set property such as report filename
use crystalcontrol.action = 1 to fire report
use crystalreport.replaceselectionformula = secelection Fromula desire to filter report

Thanks I will try the same.