Start at middle of a slide show & Mouseover Slide Message

* DHTML slideshow script- © Dynamic Drive DHTML code library

var photos=new Array()
var photoslink=new Array()
var which=0

//define images. You can have as many as you want:
photos[0]="questions/intro.jpg"

//Specify whether images should be linked or not (1=linked)
var linkornot=0

//Set corresponding URLs for above images. Define ONLY if variable linkornot equals "1"
photoslink[0]=""
photoslink[1]=""
photoslink[2]=""

I need to start the slide show at a particular slide, not the first one. Can this be done?
I need a mouse over on a displayed slide to reveal a message about that slide. Is this possible?