Hi Gordon.I don`t think using one of those "scanners" from 7day is a good idea.
Firstly they are not scanners in that they simply record the image in the same way as a digi compact does.
A dedicated film scanner will make a slow pass along the neg/slide,taking several minutes for each.
My method with my Minolta Scan Dual II is to import the scanned file(TIFF)into CS4 via Bridge.Most tweaks are done in ACR,then save as a TIFF copy to another HDD,then a JPG copy to My Pictures.
Negs are a lot more work than slides--casts,odd colors,dust etc.