Urgently!!!!please Help Me Out With Crystal

My Application is being developed using VB.NET 2002 and crystal 9.0 .I just want to be able to launch my crystal report by clicking a command button from my vb.net form .My Crystal report has got only one 'Parameter'(IDNo) of String data type.How can I pass this parameter so as to launch a report at a button click through vb.net???
Please help me urgently!!
Appreciating.....
kenone

Read the CR in VB.NET at my signature and check how I Pass the parameter there