Identifying long running tran as part of row-versioning, applicable on in 2005 & 2008

SELECT ses.original_login_name,trn.session_id,transaction_id, rtrim(ltrim(str(elapsed_time_seconds/3600)))+' Hours
'+rtrim(ltrim(str((elapsed_time_seconds/60)%60)))+' Minutes'
as 'row versioning since', ses.status,
[host_name]--,last_request_start_time,last_request_end_time
FROM sys.dm_tran_active_snapshot_database_transactions trn
inner join sys.dm_exec_sessions ses on ses.session_id=trn.session_id
ORDER BY elapsed_time_seconds DESC;