Apache Mod-Rewrite

Could you please help me out?

Right now, my .htaccess is configured to redirect
Forum-Something > forumdisplay.php?fid=number
Thread-Something > showthread.phpp?tid=number
Post
Calendar
User
and blah blah blah.

I would like to configure it to do forums/Something.html

Here is my .htaccess

Thanks!

Code:

Options -MultiViews +FollowSymlinks -Indexes

#
# If mod_security is enabled, attempt to disable it.
# - Note, this will work on the majority of hosts but on
#   MediaTemple, it is known to cause random Internal Server
#   errors. For MediaTemple, please remove the block below
#
<IfModule mod_security.c>
    # Turn off mod_security filtering.
    SecFilterEngine Off

    # The below probably isn't needed, but better safe than sorry.
    SecFilterScanPOST Off
</IfModule>

#
# MyBB "search engine friendly" URL rewrites
# - Note, for these to work with MyBB please make sure you have
#   the setting enabled in the Admin CP and you have this file
#   named .htaccess
#
<IfModule mod_rewrite.c>
    RewriteEngine on
        # Google SEO workaround for search.php highlights:
        # Make this rule the first rewrite rule in your .htaccess!
        RewriteRule ^([^&]*)&(.*)$ http://www.nintendalgia.com/$1?$2 [L,QSA,R=301]
    RewriteRule ^forum-([0-9]+)\.html$ forumdisplay.php?fid=$1 [L,QSA]
    RewriteRule ^forum-([0-9]+)-page-([0-9]+)\.html$ forumdisplay.php?fid=$1&page=$2 [L,QSA]

    RewriteRule ^thread-([0-9]+)\.html$ showthread.php?tid=$1 [L,QSA]
    RewriteRule ^thread-([0-9]+)-page-([0-9]+)\.html$ showthread.php?tid=$1&page=$2 [L,QSA]
    RewriteRule ^thread-([0-9]+)-lastpost\.html$ showthread.php?tid=$1&action=lastpost [L,QSA]
    RewriteRule ^thread-([0-9]+)-nextnewest\.html$ showthread.php?tid=$1&action=nextnewest [L,QSA]
    RewriteRule ^thread-([0-9]+)-nextoldest\.html$ showthread.php?tid=$1&action=nextoldest [L,QSA]
    RewriteRule ^thread-([0-9]+)-newpost\.html$ showthread.php?tid=$1&action=newpost [L,QSA]
    RewriteRule ^thread-([0-9]+)-post-([0-9]+)\.html$ showthread.php?tid=$1&pid=$2 [L,QSA]

    RewriteRule ^post-([0-9]+)\.html$ showthread.php?pid=$1 [L,QSA]

    RewriteRule ^announcement-([0-9]+)\.html$ announcements.php?aid=$1 [L,QSA]

    RewriteRule ^user-([0-9]+)\.html$ member.php?action=profile&uid=$1 [L,QSA]

    RewriteRule ^calendar-([0-9]+)\.html$ calendar.php?calendar=$1 [L,QSA]
    RewriteRule ^calendar-([0-9]+)-year-([0-9]+)\.html$ calendar.php?action=yearview&calendar=$1&year=$2 [L,QSA]
    RewriteRule ^calendar-([0-9]+)-year-([0-9]+)-month-([0-9]+)\.html$ calendar.php?calendar=$1&year=$2&month=$3 [L,QSA]
    RewriteRule ^calendar-([0-9]+)-year-([0-9]+)-month-([0-9]+)-day-([0-9]+)\.html$ calendar.php?action=dayview&calendar=$1&year=$2&month=$3&day=$4 [L,QSA]
    RewriteRule ^calendar-([0-9]+)-week-(n?[0-9]+)\.html$ calendar.php?action=weekview&calendar=$1&week=$2 [L,QSA]

    RewriteRule ^event-([0-9]+)\.html$ calendar.php?action=event&eid=$1 [L,QSA]

# Google SEO URL Forums:
RewriteRule ^Forum-([^./]+)$ forumdisplay.php?google_seo_forum=$1 [L,QSA,NC]

# Google SEO URL Threads:
RewriteRule ^Thread-([^./]+)$ showthread.php?google_seo_thread=$1 [L,QSA,NC]

# Google SEO URL Announcements:
RewriteRule ^Announcement-([^./]+)$ announcements.php?google_seo_announcement=$1 [L,QSA,NC]

# Google SEO URL Users:
RewriteRule ^User-([^./]+)$ member.php?action=profile&google_seo_user=$1 [L,QSA,NC]

# Google SEO URL Calendars:
RewriteRule ^Calendar-([^./]+)$ calendar.php?google_seo_calendar=$1 [L,QSA,NC]

# Google SEO URL Events:
RewriteRule ^Event-([^./]+)$ calendar.php?action=event&google_seo_event=$1 [L,QSA,NC]

# Google SEO 404:
ErrorDocument 404 /misc.php?google_seo_error=404

# Google SEO Sitemap:
RewriteRule ^sitemap-([^./]+)\.xml$ misc.php?google_seo_sitemap=$1 [L,QSA,NC]

    <IfModule mod_env.c>
        SetEnv SEO_SUPPORT 1
    </IfModule>
</IfModule>

#
# If Apache is compiled with built in mod_deflade/GZIP support
# then GZIP Javascript, CSS, HTML and XML so they're sent to
# the client faster.
#
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE application/x-javascript text/css text/html text/xml
</IfModule>

DirectoryIndex portal.php

 

I'm not so up on my apache directives, but I did a quick google search, and found a link on .htaccess web redirections that may be of help.

Good luck!