First of all, congrats on wanting to get into taping. I bought my MD back last summer and unfortunately I've only used it once, but I was very happy with my recording. If you haven't downloaded it before, check it out here: http://www.crows-town.com/showthread.php?t=109
Also, let me give you a link to the ebayer I bought my set-up from. http://search.ebay.com/_W0QQsassZglenshereQQhtZ-1
His seller name is glenshere. He has lots of great deals and most are usually complete with microphones and all the cables, discs, headphones, adapters, etc that you'll need. As far as prices go, it's ebay... sometimes you'll grab a great deal, other times you'll pass as the prices go higher and higher. I was happy with what I got for the money compared to other auctions that I saw come and go. His stuff is definately higher-end than the recorder you showed. As far as quality goes, you have to figure that with most electronics you get what you pay for. I know it sounds like hokey advice, but quality does usually come for a price, YOU just have to decide what that price is. My stuff is definately lower-end compared to what most tapers that consistently put out the top-quality recordings use.
As far as getting the sound from your minidisc to your HD, there are several ways to go about it, but I really only know of three. 1) you need a minidisc reader that plugs into your USB. I have no idea how much these run, but I'm sure it'll put up the costs considerably. 2) you can use the microphone jack on most stereos and record on cassette tape. From there, you have the tape converted to CD by someone with the proper equipment. 3) you can find a male-male audio cable and use the audio-in jack on your PC and the headphone jack on your MD. You play with the MD and record on your HD using SonicRecordNow or some other capturing software in the highest quality WAV possible. From there you have to have additional software to split into tracks and fade in and out if desired, etc., etc.
I'm sure there are other ways to do this as well and I'm also sure there are others on here that can give you much better info than I can. Remember, I only have one experience so I'm in no way an authority here.
Feel free to post any more questions or if you'd rather, feel free to PM me any time.
Good luck with whatever you decide and let us know!