[Forum] htaccess rewrite rule question

[Anatoliy]

Hi, I have a question. I used to use vbseo, and my threads urls looked this way: www.mydomain.com/forum-title/1234-thread-title.html . Now my urls look this way: http://www.mydomain.com/showthread.php/1234-thread-title . I found out in google webmaster tools that google still shows old urls (under crowl errors - 404 not found). As there are thousands of such links, it affects health of the site. I want to fix that. I understand that it can be done by adding a rewrite rule to htaccess file (I guess 301 moved permanently). As I don't know anything about it I would like to ask for help - would someone be so kind to let me know what should I put in the htaccess file. Thanks in advance!

[Big Dan]

This would probably be best asked at the vBSEO forums but I do have suggestion for you. Generate a new sitemap from the ACP and submit it through Google Webmaster Tools.

I moved back to vBulletin from Xenforo last week and didn't bother trying to redirect old URLs to the new vBulletin URLs. The first thing I did after importing was generate a sitemap, submit it to Google and delete Xenforo's sitemap through Webmaster's Tools. Google is showing quite a few 404 errors but they've indexed almost 20k of the new URLs in just a week.