[RADIATOR] Radin: Delete Usage Summary

[scottshaw at 163.com]

 Hello team
Is there any way to delete the usage summary on Radmin? It seems not such 
option on the UI. And the usage summary will turn to be usage and it will 
cause deny of service eventually which let Radiator refuse to authenticate 
users. I would be great to have some scripts or patch to purge the table 
every a few days. I am testing this with MS SQL 2005 on windows 2003 server. 
Any advice?
Thanks
Scott