Actually, no you wouldn't. There's no such thing as a CSS Mobile Profile Generator.
There are tools which can turn an existing website into a version you can host separately (such as on a subdomain like m.yoursite.com) to make it mobile friendly - for people who want the speedier interaction. But there isn't a method in place where you can simply add a stylesheet and make your existing site mobile friendly. Partly because some issues in relation to mobile devices are down to the level of content (and scrolling), the size of images (mobile versions need scaled down ones) and the markup being used (tables aren't required but columns are a bad idea). Trying to make a CSS stylesheet which will work for mobile devices is next to impossible (in terms of adapting your existing site), the handheld at-rule doesn't work on most modern devices (most use screen or screen and handheld), CSS3 at-rules are something else rarely supported and using scripts to detect and redirect are too easy to spoof and require weekly updates.
What I think you were after (from a speech) might be this: http://www.mobify.me/