How to rewrite this url?

mod rewriter

[andyrew79]

i have a url like:
www.mydomainname.com/index.php?dir=jim/23/ny
how to rewrite this url to :
www.mydomainname.com/jim/23/ny
or
www.mydomainname.com/jim/23/ny.html
thanks

[jdMorgan]

See this thread [webmasterworld.com] in our forum library.

Jim