googlebot and msnbot question

[binkuang]

hi. i have problem with the google and msn spider to crawl my wedsite. when i rewrite my url. all the url already indexed in google all change to 404 not found problem. and the google spider just came to my home page and not crawl any thread. the msn spider alway just on the
home page too. never crawl on somewhere eles. how can i tell more spider crawl my wedsite. how can i fix the indexed 404 url in google?

[Dismounted]

You need to set up 301 redirects for the old-style URLs to go to the new ones. Ask the author of the modification you are using.