Hello,
The slicing of certain websites is done in Photoshop itself before taken into a web creator. The webpage is primarily drawn out in Photoshop as it wants to appear, and then there is a tool in the tool menu that's called "slice" and with it you draw the appropriate boxes around each section which will make each a different image (i havent found a way to insert text into these images after the fact, so any area that needs to be changed now and then should be made a web-colored box (because otherwise the colours will not match and might appear unexperienced) and can be deleted in the web creation to allow for text space. the images, then, in the web programs can have attached hyperlinks/hotspots (smaller areas of the picture in which there is a link) or just be as they are.
Okay, ive rambled on without explanation.
After the slicing occurs, one needs to go under the File menu, and select "Save for Web" this takes you to a screen in which various forms (in relation to quality of images/size) of your page appear and you are able to change the resolution to such that it still looks good but doesnt take up a whole lot of time to load. (this can be changed by on the right side, changing the type of image (which depends on how much colour is in each one)) to jpg/gif etcetra and also a menu to select how many colours are used. if you have a image using only blue, black, and white, you dont want that menu to have selected fifty colours, only three. Simple as that. Once this is all done, press save, save this page in your web folder and you're good to open it up in the web program and go from there.
(I realize that I've commented after change of subject, but this information is still good to know.)