I use an adapted serendipity installation for a small business website. Since the beginning I used "Disable URL rewriting", but as I am currently optimizing the website I would like to activate mod_rewrite and there I have several questions:
1) Can I make redirects form all currently indexed pages to the new rewritten ones so google knows that these are the old pages in a new fashion
Actually, old URLs should still work, as long as you only enable mod_rewrite and not change the permalink scheme. So there isn't really a need to redirect anything. Google will later use your permalinks and discard the old ones, once it properly indexes your new URL layout.
If you really want 301 redirects, you need custom URL rewrite rules.Manually.
# Garvin Hicking (s9y Developer)
# Did I help you? Consider making me happy: http://wishes.garv.in/
# or use my PayPal account "paypal {at} supergarv (dot) de"
# My "other" hobby: http://flickr.garv.in/