how to add the rule.

[jianhui Profile]

url is http://mysite.com/product.aspx?id=&cate ... color=blue

the prod list I have put to map file.

RewriteMap mapfile txt:mapfile.txt
RewriteMap revmapfile txt:revmapfile.txt
RewriteCond %{QUERY_STRING} (.+) [NC]
RewriteCond ${mapfile:%1|NOT_FOUND} !NOT_FOUND

I want to

http://mysite.com/productname1?category=4&color=blue

please let me know how to do it. thanks