Delete or reset the site usage statistics for WSS 3.0 site

Steps :
•    On the Central Administration home page, click Operations.
•    On the Operations page, in the Logging and Reporting section, click Usage analysis processing.
•    On the Usage Analysis Processing page, in the Logging Settings section, uncheck Enable logging.
•    Click Ok
•    Then navigate to the location which you have specified to collect log data
•    Move those files to some other location
•    Disable Usage Reporting (this config is in SSP admin site)
•    Disable Usage Reporting (this is site collection feature)