Hiya, thinmint. Welcome to the club. The Rode picks up *everything*, doesn't it? Don't even think of making unwanted noise - it'll pick up thoughtforms as well.
I know this view is kind of radical, but I think of the Rode as the ultimate party/ambient mic. Just go along with the officially unwanted noise it picks up. It's like eating wholewheat bread the first time - you wonder what all these chewy bits are. After a while, you start to like it.
I am, of course, taking an entirely new approach to recording here, and conservatives who want their recordings all refined (shielded) and with additives (FX) won't agree. But I mean why let commercial recording determine home recording approaches and standards?
Don't go thinking S8-N's the only one who can stir up a bit of controversy.
As for the computer noise, nah, I don't like that either - get longer cables. I record within a meter of my tower, and unless the hard disk's processing something, there's no unwanted noise. Or maybe all the other ambient noise here is just drowning it out (grin).