If it was a word doc, open word then File at the top look down the list for the doc name should be near the bottom of the list. Or try start then my recent documents see if its in the list.
Word will tend to save that type of file in
C:\Documents and Settings\All\Local Settings\Temporary Internet Files\Content.IE5 as a temp file. CFY.......... so unless you have cleared your internet history it might still be in there try a search for CFY
Max