Making your site pda friendly?

[PartisanEntity]

Hello,

I hope someone here can help me.

I would like to make my site pda friendly, I've seen some sites that switch to a specific folder on the server, when being viewed from a pda.

Example:

Normal site: www.mysite.com

When being viewed from pda directs you to: www.mysite.com/pda

How would I do that?

Thanks