help with .htaccess ( prblem with '?' )

hi,i am having a problem with '?' character.

i want my links to look like this:
http://example/register.htm?err=the+error+message
this shud display
http://example/index.php?register&err=the+error+message
this is the htaccess code i usedonly the link concerning my problem)


RewriteRule ^(.*?).htm?err=(.*)$ index.php?$1&err=$2

but it is not working as desired. i replaced the question mark with an underscore and it worked but the link is not seo friendly anymore.

any help will be appreciating

 

Try the following may be
RewriteRule ^(.*?).htm\?err=(.*)$ index.php?$1&err=$2

 

i just tried it and it didn't work.