Redirect to different url with same ID

I switched from phpb to mybb and the forum and topic urls are different (its showthread.php?tid= instead of viewtopic.php?t=)

So what I'm asking is.. is it possible to have it redirect anything that comes in as viewtopic.php?t=number to showthread.php?tid=number, if so how?

Thank you

 

Assuming you have mod_rewrite enabled, put this in a .htaccess file in your forum directory. Obviously edit the URL to match the URL to your new topic pages.

Options +FollowSymLinks
RewriteEngine On
RewriteCond %{QUERY_STRING} t=([0-9]+)
RewriteRule ^viewtopic\.php$ http://www.yourdomain.com/showthread.php?tid=%1 [R=301,L]

Code (markup):

 

Thank you Rodney!!