test system requirements of a user on your site

i wanna add something like this http://viasatondemand.se/about/Requirements.aspx on my site to check the system requirements of a user who enters my site… how do i do that? i was told that i have to write it with xml but if there are options other than xml [like most preferably php] it would be great… if you can help i’d be much thankful.

below is a snapshot.

All depends from your actual need

On that site they check the IP address to get the country from where you are, then they check your operating system… the browser you are using… if javascript is enabled… if you alow cookies…

all that you can do from PHP…