.htaccess and URL redirects when changing domain name and URL structure!

Hi!

I have a client that would like to redirect http://www.aktivfritid-shop.no/kategori.asp?maingroup=02 Tredemøller&bid=1

to http://www.aktivshop.no/epages/Akti...ectPath=/Shops/Aktiv_Fritid/Categories/10/100

Is this possible to do in .htaccess?
Perhaps somebody could help me by showing an example?
If this is not possible - how may I redirect all visitors to URLs that is no longer in use to the www.aktivshop.no domain automatically with a permanent 301 redirect?

 

From
aktivfritid-shop.no/kategori.asp?maingroup=02%20Tredem%C3%B8ller&bid=1
to
aktivshop.no/epages/Aktiv_Fritid.sf/secdVupgoGRCSs/?ObjectPath=/Shops/Aktiv_Fritid/Categories/10/100
is not possible and makes no sense, where do you get these variables: Aktiv_Fritid.sf/secdVupgoGRCSs/?ObjectPath= ?????

Possible is something like this with mod_rewrite.
http://httpd.apache.org/docs/1.3/mod/mod_rewrite.html

From
http://www.aktivfritid-shop.no/kategori.asp?maingroup=02 Tredemøller&bid=1
to
http://www.aktivfritid-shop.no/maingroup/02 Tredemøller/bid/1.html

RewriteEngine On
RewriteRule ^maingroup/([^/]*)/bid/([^/]*)\.html$ /kategori.asp?maingroup=$1&bid=$2 [L]

Code (markup):

maybe that helped