From your previous post you already put new plugs fuel filter etc and the pump - having sat that long though I'd probably suspect the injectors may be gummed up and that could be what's casuing it not to run properly.
Seems like you have just about everything else covered already
The idle control valve looks like this
The three hoses on the left (two bottom one top) are the locations that go to the three throttle bodies (order not important).
Those hoses should ONLY be in those locations and be in good condition, no cracks or leaks. Leaking hoses would make it rev high however.
If it has a carbon canister (CA bike) then there may be some additional hoses that route to that - nothing that will affect the performance however - you can rip that lot out if you like!
I would seriously suspect the injectors.
Edit - Sorry - as I check back your posts you have a 2000, thought it was a T595 -
The Idle Control valve is like this on your bike - Just make sure that if it did initially have the CA carbon canister, & you removed it, that you don't have 'open' connections on the idle lines to the TB's.
