Correct! It also comes with the cable needed to connect to the IIe
See above.
1105W. Isn't used to configure the switches but very helpful in setting up the panel. You will need to name the switches and this will make your life easier.
Commonly used part numbers below.
35A00-1 - 600W Dimmer
38A00-1 - Scene Controller
38A00-1 - House Controller
40A00-1 - 15A Relay Switch
You may also need a phase coupler which is part number 39A00-1. Not all homes need a phase coupler but it is recommended for most installations.
Connect the cable from the PIM to the IIe via the supplied cable. Next open PC Access (1105W) and name all your switches under Setup > Names and Voices. When doing this be aware that the first unit of each "Room" (8 Units in a room) is reserved for a Scene Controller. If you don't have a Scene Controller you should just give it a generic name, IE Downstairs, Living Room, Outdoor Lighting, etc... (This applies to units 1, 9, 17, 25, 33, ....)
Next you want to set your House Codes to HAI Lighting. This can be done under Setup > Misc > Control. Each house code is 16 units (2 rooms of 8 Units).
Now under Setup > Installer > Expansion set the correct serial port function to UPB.
Once all that is done, download the file to the panel.
Now to configure a switch you first go put the switch into setup mode. This is done by taping the rocker 5 times quickly. The load should then flash once and the LED on the switch will begin to blink. Now go back to a keypad and hit the "6" button (Status) then "1" button (Control) and scroll down to the name of the light you just put into setup mode. Once there hit the "#" key twice to configure the switch.
EDIT: Just saw the last part of your question.
The switches will actually show up in Snaplink/H@me as soon as name the switches and download them, however without configuring them properly they won't be functional.