iis mirgration for hersh site

Hi,
I am moving some our website (hershonline.com) to a new apache box.
Currently we are currently running the hersh site (hershonline.com) on a iis
6 box. Can someone recommend some sites for specifics n the migrations
including ssl migration?

I would assume that the hersh site will run better on a apache box because
php was developed for this environment originally. Is this correct?

Thanks,
Dale

Hersh Corporation
hershonline.com