FrontPage will be around for quite some time. EWD (Expressions Web Design) is FrontPage's replacement from MS. It is pretty much the same as FrontPage with a few more bells and whistles. The same tips I'm sharing here, will apply to EWD also.
Yes there is. One is Microsoft driven, the other is Macromedia driven. If you are an avid user of Macromedia products, DW is the way to go. If you are an avid user of MS products, FP or EWD are the way to go for many.
When you open DW, do you get a prompt asking you to make DW your default editor? If so, select yes. That should add it to the dropdown for HTML editors.