run that htaccess.php in your host example:
www.you-site.com/forum/htaccess.php
be sure you edit this before you run that going here example:
http://www.you-site.com/forum/adminc...og_seo_options
choose a prefix usin SE
SE: SEO Friendly (folders)
then you choose that run example:
www.you-site.com/forum/htaccess.php
read the content there and follow the instructions here´s the example
############################################
## vBlogetin .htaccess rules
##
## Automatically generated by:
## http://www.your-site.com/forum/blogs/htaccess.php
##
## Copy and paste these rules in a .htaccess file at your web root, not at your
## forum or blog root. If you already have a .htaccess at your web root, such
## as a vbSEO ruleset, you will need to merge these rules with it, placing
## these rules BEFORE any others in the file.
##
## If you ever change your SEO link formats in the future, you will need to
## run this script again and replace your previous vBlogetin .htaccess rules.
##
## Example URL's:
##
## http://www.your-site.com/forum/blogs/the_mud_wallow/
## http://www.your-site.com/forum/blogs/the_mud_wallow/category/wallowing.html/
## http://www.your-site.com/forum/blogs/the_mud_wallow/great_places_to_wallow-36475/
## http://www.your-site.com/forum/blogs/the_mud_wallow/great_places_to_wallow-36475/comment-7.html
##
## AdminCP Settings:
##
## Blog URL: http://www.your-site.com/forum/blogs
## Blog SEO URL: http://www.your-site.com/forum/blogs
## Blog URL Format: SE - Blog Title
## Entry URL Format: SE - Entry ID
## Comment URL Format: SE - Comment ID
## Category URL Format: SE - Category Title
##
## You may need to uncomment either or both of these line to make URL
## rewriting work on your server:
##
## RewriteEngine On
## RewriteBase /
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_FILENAME} /blogs/(clientscript|images)/
RewriteRule ^(.*)$ $1 [L]
RewriteRule ^/blogs/([-a-z0-9]+)/entry-([0-9]+)/comment-([0-9]+)\.html blogs/viewblog.php?blogtitle=$1&entry=$2&c=$3 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/entry-([0-9]+)/feed/ blogs/syndication.php?entry=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/entry-([0-9]+)/ blogs/viewblog.php?blogtitle=$1&entry=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/category/([-a-z0-9]+)\.html blogs/viewblog.php?blogtitle=$1&categorydata=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/([0-9]{4})/([0-9]{1,2})/ blogs/viewblog.php?blogtitle=$1&month=$3&year=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/([0-9]{4})/([0-9]{1,2})/([0-9]{1,2}).html blogs/viewblog.php?blogtitle=$1&month=$3&year=$2&day=$4 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/archive.html blogs/viewblog.php?blogtitle=$1&displaymode=archive [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/feed/ blogs/syndication.php?blogtitle=$1 [QSA,L]
RewriteRule ^blogs/([-a-z0-9]+)/ blogs/viewblog.php?blogtitle=$1 [QSA,L]
##
## End vBlogetin .htaccess rules
############################################
Only copy this but the ones generated by the htaccess.php file in your server
## RewriteEngine On
## RewriteBase /
RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_FILENAME} /blogs/(clientscript|images)/
RewriteRule ^(.*)$ $1 [L]
RewriteRule ^/blogs/([-a-z0-9]+)/entry-([0-9]+)/comment-([0-9]+)\.html blogs/viewblog.php?blogtitle=$1&entry=$2&c=$3 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/entry-([0-9]+)/feed/ blogs/syndication.php?entry=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/entry-([0-9]+)/ blogs/viewblog.php?blogtitle=$1&entry=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/category/([-a-z0-9]+)\.html blogs/viewblog.php?blogtitle=$1&categorydata=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/([0-9]{4})/([0-9]{1,2})/ blogs/viewblog.php?blogtitle=$1&month=$3&year=$2 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/([0-9]{4})/([0-9]{1,2})/([0-9]{1,2}).html blogs/viewblog.php?blogtitle=$1&month=$3&year=$2&day=$4 [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/archive.html blogs/viewblog.php?blogtitle=$1&displaymode=archive [QSA,L]
RewriteRule ^/blogs/([-a-z0-9]+)/feed/ blogs/syndication.php?blogtitle=$1 [QSA,L]
RewriteRule ^blogs/([-a-z0-9]+)/ blogs/viewblog.php?blogtitle=$1 [QSA,L]
##
## End vBlogetin .htaccess rules
############################################
done? if you need more help
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