OK, at the minimum, in addition to your microphone, you will need:
1 x XLR cable (microphone cable) of suitable length for your needs.
1 x Audio Interface. In one box, this provides 1) phantom power for the mic, 2) a preamp to boost your microphone output up to suitable recording levels, and 3) an analog to digital converter to convert your sound into digital.
I would also recommend getting a mic stand and shock mount to match the microphone. If you are recording voice, then you could also get a pop shield.
The audio interface should be provided with the necessary power and data cables to hook up to your PC.
For inexpensive software, check out Reaper.
On-board sound devices are not considered suitable for "serious recording". (You can research why).
There are many lower priced usb audio interfaces on the market. Perhaps you could give some idea of budget to help others give sensible purchase options? As a rough start, have a look at the M-Audio Fast Track series.
Hope that helps.
"Bad speakers in a bad room could be likened to painting in a dark room with coloured glasses on. It really is guesswork." Steenie