shredding temporary internet files?

Question

I want no evidence of chat logs.

Answer 1

1. In either My Computer or Windows Explorer, create a new folder.
2. In Internet Explorer, click Internet Options on the Tools menu.
3. On the General tab, click Settings under Temporary Internet Files.
4. In the Settings dialog box, click Move Folder under Temporary Internet Files folder.
5. Click the folder that you created in step 1, and then click OK.
6. If you are prompted to log off, click Yes, and then log on to Windows again. If you are not prompted to log off, click OK to close all of the dialog boxes.
7. In either My Computer or Windows Explorer, delete the old Temporary Internet Files folder, and then create a new folder in the same location with the same name.
8. Repeat steps two through six again, but in step five, click to select the new folder that you created in step seven.

Answer 2

Depends on what browser you entered the chat with.

more info. required for an answer.