http://www.alltheweb.com/search?cat=web&cs=utf8&q=1999+-2004+-2005+-2006+-2003+-2002+DonMorgan+domain%3Afreerepublic.com&rys=0&_sb_lang=pref
So replace the "DonMorgan" above with your screen nick... You should be good to go.
Forgot to add, you can also remove any of the years above, or add the phrase "posted on 06" for example to get threads with posts in June. 07 for July, etc.