Yamaha DTXpress/DTXplorer/DTXtreme

Hallo,

I want to connect my DTXpressII modul to my computer.
All I want is: 1) save drumsets, sequenzer data to the computer
2) record my play, together with sequenzer if this is                
                        possible
3) create songs on my computer and send them to the dtxpress, so that
I could play to them
4)control the sequenzer from my computer

Is this possible via "to host" or do I need some midi stuff? What kind
of software do I need?
As you can see I have no idea about that, so please help me. 

Thanks in advance

Danny