Welcome to WebmasterWorld Guest from 184.108.40.206
will changing index.html to index.php, prices.html to prices.php affect his search rankings?
I have a customer who has "bought" a mobile version of his site, Effectively this is a .mobi domain name and code to convert hispages. He's sent it through to me to implement for him.
They are specifically recommending a 301 redirect from www.domain.com to m.domain.com.