Passing Values from the Form to the Report

I just want to display the name of the user who logged in the VB.NET (version 2002) application onto my crystal report(v 9).ie How can I pass the loginID from the Login Form so as to be displayed onto the crystal report???
Thanks

VB Code:

Dim paramFields As New ParameterFields
            Dim paramField As New ParameterField
            Dim discreteVal As New ParameterDiscreteValue
            paramField.ParameterFieldName = "userID"
            discreteVal.Value = userID
            paramField.CurrentValues.Add(discreteVal)
            paramFields.Add(paramField)
 
            <Your CR View Object>.ParameterFieldInfo = paramFields

Make a forumula field in ur report and pass the value to that report from ur form, simply read msdn for this.

you find many good examples.