hi Ravi,
have a look at the attached report. extract the contents and change the .txt extension to .rpt.
this is not a report that was designed as a Label report, but is a multi-column report. see the section expert for the Details section if you're not familiar with multi-column reports. note in the Layout tab the options used.
also note that there are 3 groups in the report to make this happen. each of the group headers are conditionally suppressed based on the parameter.
i hope this helps,
jamie