problem with archive address "/" insted of "?"

[koorosh1]

hello....

all of my forum archive address were like this :

http://p30city.net/archive/index.php?t-21.html

but 3-4 days ago when i upgrade my forum the old addresses are not avilable
and new addresses are like this :

http://p30city.net/archive/index.php/t-21.html


and it is very bad for SEO and search engins like google none of our addresses for archive are avilable....

i have sent a ticket and they told me the new form of address is correct

so i want to use rewrite_mod and .htaccess file to redirect the old addresses

could you please help me ?

really most of forums i know in iran have the "?" form for their archive .....


thank you