Okay this is what I found and it seems to be working great. I went to the link below. I used the script filled in all my server and url infor then instead of naming it vbseo301.php I renamed it to 404.php because I dont have vbseo. I then saved it in the root of my server. Just fyi my forum is in a sub-folder but I guess that doesnt matter. Then in the htaccess in root, I used the smf code also found in link below and changed vbseo301 to 404, there is 4 places in the smf htaccess code that need changed to that.
http://www.vbseo.com/f2/404-301-tool...-forums-27498/