[Closed] first try at dot net. need a bit nof help

I posted up a midi script on the autodesk forums sometime back
http://discussion.autodesk.com/thread.jspa?messageID=5722727&#5722727
, in one of the replys someone had posted up a script using dot net to read a midi file so Im trying to get this to work but I dont know anything about dot net programing , Im using this dll
http://www.gotdotnet.com/community/usersamples/details.aspx?sampleguid=89cde290-5580-40bf-90d2-5754b2e8137c

heres the script

myAssembly = dotNetClass "System.Reflection.Assembly" 
myAssembly.loadfrom scriptpath+"[\\midi\Toub.Sound.Midi.dll](file://midi/Toub.Sound.Midi.dll)" 
-- midiEC = dotnetobject "Toub.Sound.Midi.MidiEventCollection"
-- midiME = dotnetobject "Toub.Sound.Midi.MetaMidiEvent"
midi = dotnetClass "Toub.Sound.Midi.MidiSequence"
midifile = midi.import scriptpath+"[\\midi\SgtPepper.mid](file://midi/SgtPepper.mid)"
-- showproperties midifile
i = midifile.item 0
--showproperties i
ev = i.events
--showproperties ev
--Set the time as we go through the events
deltaTime = 0
--Go through the events
for x = 0 to (ev.count - 1) do
( 
evnt = ev.item x
str = (evnt.tostring())
--format "%	%
" x str
tempo = .1
case of
(
--Tempo Event
(matchpattern str pattern:"Tempo*"):
(
format "%	%
" x str
--given Tempo appears to be in ms/b
--60,000,000 ms/minute / 
tempo = 60000000.0/evnt.value
tempo = tempo /100.0
format "Tempo: %
" tempo
)
--Note Event
(matchpattern str pattern:"NoteOn*"):
(
--format "%	%
" x str
deltaTime = deltaTime + evnt.deltaTime
format "Time:%	 NoteNum: %	 Velocity:%
" deltaTime evnt.note evnt.Velocity
ctrl = undefined
case of
	(
	(evnt.note == 20):ctrl=$Sphere01.position.controller.z_position.controller
	(evnt.note == 31):ctrl=$Sphere02.position.controller.z_position.controller
	(evnt.note == 37):ctrl=$Sphere03.position.controller.z_position.controller
	)
--To key objects do this
/*
if ctrl !=undefined then 
	(
	animate on
	 (
	 at time (((deltatime/10) - 1) as time ) ctrl.value = ctrl.value
	 at time ((deltatime/10) as time ) ctrl.value = (evnt.velocity)/10
	 )
	)
*/
ctrl.value = (evnt.velocity)/10
redrawViews()
sleep tempo
)
)
--showproperties evnt
--evnt.value 
)

and heres the error Im getting

dotNetClass:System.Reflection.Assembly
– Runtime error: No method found which matched argument list
undefined
– Unknown property: “import” in undefined
– No ““showProperties”” function for undefined
– Unknown property: “item” in undefined
– Unknown property: “events” in undefined
0
– Error occurred in anonymous codeblock
– Frame:
– Unknown property: “count” in undefined
OK

I have asked on the autodesk forum but I know a few of you guys here know dotnet so I hope you can help .
what does this mean “No method found which matched argument list” it seems the script is loading the dll so why am I getting this error ?

got to go out to work but will look at this post when i get home tonight.
thanks for reading

Thanks for reading