Redirect code for wordpress

I need to insert a code (java or PHP) that I already have in my wordpress site in order to redirect it to my new .mobi website, and I do not know how/where can I do this.

This code will 'note' when the access is made using a mobile device and will show a proper site (my .mobi one), not my regular wp site.

If there is here a wordpress and/or PHP expert who knows how to do it without jeopardizing my site we need to talk.

thanks in advance
Sigma

Any mobile look? Like IPhone or standard mobile (non touch screen)?
I can do that.
Hit me a PM

Not a big deal