The file you refer to was a web page (or HTML email) that was infected with the trojan. McAfee deleted it to stop the trojan further infecting your computer. The file isn't needed and was safe to delete. Files in ..\temporary internet file\content.IE5\ are cached web pages and are always safe to delete.
If it was an HTML email message that looked like it came from Ebay or PayPal, the address might have been 'spoofed'.
You can find out more about JS/Stealus Trojan on the McAfee website at
http://vil.nai.com/vil/content/v_126246.htm
And about how addresses are .spoofed' at
http://www.lse.ac.uk/itservices/help/spamming&spoofi ng.htm
Hope that helps ;-)