Switching from Blosxom: RSS and .htaccess?

Hello,

I finally decided to switch from Blosxom 2 to WordPress. Everything works fine so far but I have issues with the .htacces file.

The URL to the old RSS feed is:
https://www.my-two-cents.de/index.rss

The URL to the WordPress feed is:
https://www.my-two-cents.de/feed

I tried to alter my .htaccess file for redirecting recuring visitors to the new feed but it doesn’t work (I get a 404 error).
Here’s my .htacess:

—-BEGIN EXAMPLE—-
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
RewriteRule ^index.rss /wordpress/?feed=rss2 [QSA]
—-END EXAMPLE—-

I tried several combinations of the last RewriteRule including:
RewriteRule ^index\.rss$ feed
RewriteRule ^index\.rss$ /feed
RewriteRule ^index\.rss$ feed/

I also tried to write the line inside the IfModule but that didn’t worked, either.

Thus, how should I change the .htaccess for success? ??

Any comments welcome!

Thanks,
Stefan