Help next to setting up small home record studio? I'm an instrumentalist (primarily guitar - acoustic & electric -, piano (an...

I'm an instrumentalist (primarily guitar - acoustic & electric -, piano (an electric-grand), and trumpet), and hold been hoping to create a small home-recording set up, simply for some instrumental tracks (perhaps vox in adjectives, but I don't sing personally).
Right now, I do thoroughly dodgy stuff on an old web-chat microphone and Audacity.
I do however own a copy of Cubase on my laptop.
I generally journal drum beats bad the electric-grand, then incorporate my instrumentation on top of that. However, I've lately have problems with padding (no doubt from the lack of pro set-up), and would approaching to have a slightly more serious point.
I primarily record past its sell-by date my guitars (an electric, and an un-amplifiable acoustic, however I do plan to crystal-wire it sometime soonish), and consequently sometimes include piano or trumpet over that.
So what equipment (as a minimum) would be good to work next to? I don't know all the argot, so you might have to explain, but any abet would be greatly appreciated.
Cheers!
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Answers:    The easiest way to jump is a Lexicon Omega. Unless you are doing major production, this piece has everything you could possibly want for around 200.00 bucks. Seriously. This have more capability than studios that cost 100K final in the behind sixties/early seventies. Of course, you might want some effects and what not. This will allow you to use them pre or post recording. Very flexible. I hold one, along with a bunch of other stuff I yearning I didnt buy before I get it!

http://www.lexiconpro.com/ProductIndex.a...
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a drum machine and a mixer would be a dutiful start.