History, cookies and temporary internet files are certainly necessary to clear. Still, your history is at 2 places:
1. With your ISP in his logging file. Any FBI or CIA agent with the right authority and papers can see it.
2. In the hidden index.dat files kept by Internet Explorer. To have a look inside them: a freeware program called index.dat viewer (http://www.programurl.com/index-dat-viewer.htm).
The way to remove them: a freeware program called MOVEONBOOT or the tracks eraser advertised in http://www.acesoft.net/delete_index.dat_files.htm.
Email sent definitely is logged at your ISP. But not in your computer. You should take care to compact the Sent Items folder in Outlook Express however.
If you're really concerned about your privacy, or have things to hide, it might make sense to invest in a program like the one I referred to above.
Hope this helps.
I know enough to go to tools , and clear history cookies and files. Are there other places someone could look and track where I have been and email I have sent.
How do you keep your computer so others can't track