dreamweaver MX

hi
Just got DW MX. Building a site from Colin Smiths book FROM PS TO DW- 3 steps...I built homepage in PS7, sliced and optimized in Imageready and then opened up dreamweaver MX, defined site etc.
When I open (in DW) the homepage.html link my page comes up but it has 3 extra slices in my left vertical nav bar and also 2 extra slices in the bottom of my main area.
I dont recall putting these in. Can I get rid of them? Will they screw me up later on if I leave them(nothing is in the slices, they just highlight when mouse goes over?
I also went into imageready and PS7 to try to open up my old folder where this site that I am building was and I cant find the folder anymore..and I KNOW i DIDN'T DELETE IT.
Does the folder go away once it goes into DW MX?
Do I only work in DW MX for editing and uploading from now on?
If anyone could help I would really appreciate it. These forums are awesome. It is like having your own personal mentor.
Thanks very much

I.E.

I can't answer all of your questions, but you should go back and look at where you put your slices, because sometimes PS automaticly puts some (maybe the ones you didn't want) and those are deletable.
Also look in the folder you keep your DW MX site's files in, it probably just transfered the file over to there.