From previous post :
iexplorer comes in 3 varieties, a system process (legit), a browser plug-in (maybe legit) and a trojan (yeecchh).
http://www.liutilities.com/products...brary/iexplore/ and read the paragraph.
Go over to TrendMicro and run housecall :
http://housecall.trendmicro.com/
Did the computer scan turn up clean?
If it did then worry about something else.