Now I need to create the redirection: I had vbulletin 4 and vbseo.
This is what I'm going to do, please correct me if it's wrong:
1) since my vbulletin board was installed in the /forum directory, I will upload the showthread and forumdisplay files from kier into the /forum directory.
2) in the /forum directory, I also upload an .htaccess file with the rules created thanks to shadab script
3) I DO NOT NEED TO USE the vbulletin 4.x redirect script . Or do I need it? Please help, I'm confused!