Jim B wrote here: http://wwwfivedoves.com/letters/dec2005/jimb1231.htm
 
It's such a good foundational bible prophecy question that I added and article to my site here to address it.
 
The 6000 Year Timeline Dilemma
http://www.escapeallthesethings.com/6000-year-timeline.htm
 
Let me know if you have further questions Jim and all.
Kind Regards,

Tim McHyde
http://www.TimMcHyde.com
Bible Explanations That Make Plain Sense