How can i make it so 56k use a spcific style?

[bashy]

Hi peeps

As the title states, I have a pretty intensive site with regards to loading times and low internet speed users will find it very slow loading...

How can i set it so that users under say 100k connection connects to
a certain style and the rest to the default style please?

[bashy]

Can anyone advise me on this 1 please...

I need it so Peeps on a low internet connection speed auto load up another style?