RewriteEngine On   
RewriteRule ^t(.*).html showthread.php?t=$1 [L]   
RewriteRule ^f(.*).html forumdisplay.php?f=$1 [L]   
RewriteRule ^post(.*)-(.*) showpost.php?p=$1&postcount=$2 [L]  
RewriteRule ^u(.*).html member.php?u=$1 [L]  
RewriteRule archive/t-(.*) archive/index.php/t-$1 [L] 
RewriteRule ^t.(.*)html showthread.php?t=$1 [L]   
RewriteRule ^f.(.*)html forumdisplay.php?f=$1 [L]   
RewriteRule ^u(.*).html member.php?u=$1 [L]  
RewriteRule ^t(.*) showthread.php?t=$1 [L]
RewriteRule ^users/(.*)-albums(.*)-(.*)/ album.php?albumid=$1&pictureid=$2 [L]   
RewriteRule ^users/(.*)-albums(.*)/ album.php?albumid=$2 [L]