Well I keep this short since you seem to have no idea about wireless network caputre.
The question is, what do you want to do? Do you want to capture packets to hack passwords, or do you want to analyze individual packets in unencrypted networks.
Nevertheless try to learn do your own research.
1. rt73 Chipset of the wireless dongle (Hardware)
2. KisMAC, yeah software, but also comes with the kernels to talk to the rt73 hardware. Purpose: CAPTURE
3. Wireshark, software. Purpose: (Capture), ANALYZE.