RewriteEngine On

RewriteRule ^t(.*).html index.php?page=topic&show=1&id=$1 [L]
RewriteRule ^f(.*).html index.php?page=forum&show=1&id=$1 [L]
RewriteRule ^u(.*).html index.php?page=profile&show=1&id=$1 [L]
RewriteRule ^p(.*).html index.php?page=print&show=1&id=$1 [L]
RewriteRule ^archive(.*).html archive.html [L]
RewriteRule ^Af(.*).html index.php?page=forum_archive&show=1&id=$1 [L]
RewriteRule ^At(.*).html index.php?page=topic_archive&show=1&id=$1 [L]
RewriteRule ^search(.*).html index.php?page=search&index=1 [L]
RewriteRule ^t(.*) index.php?page=topic&show=1&id=$1 [L]
RewriteRule ^sitemap.xml  index.php?page=sitemap&subject=1
RewriteRule ^sitemap(.*).htm index.php?page=sitemap&sitemaps=1 [L]
RewriteRule ^(.*).html$ index.php?page=profile&show=1&username=$1 [NC,L]