that stereo mic has some small print

"NOTE: will only work with Sony MZ-NH1, MZ-NH900, and MZ-NHF800 MiniDisc recorders"

The first one will be fine if you can supply it with phantom power and have an XLR connection. Sound cards cant usually do either.

If you want to use a condenser mic (like the first one) the cheapest option is to get a Behringer channel strip like the ultra-gain pro that will supply a mic preamp (much better than the one in your sound card), some EQ, some compression, some de-essing and phantom power. You plug this into the "line in" of your sound card (not the "mic in" as you will overload it) or the newer ones have an S/PDIF out which you can also hook up to the digital S/P DIF in if your sound card has one.

Mic placement will be critical to getting the best sound possible however Id not worry too much about that until you have a mic that works.