the requirements of supporting WSC or PUSH-BUTTON?

[c4linux]

Hi,all:
	
I'm confused about the requirements of supporting WSC or PUSH-BUTTON or WPS(they have the same meaning?), there are few documents about supporting Wi-Fi Simple Configuration. 

So , I post some questions here for help:

1. Is WSC a pure software that can work without any hardware supporting?
2. my wifi chip is Atheros AR2413, dose it support WPS ?
3. Any version of Madwifi can support WSC ?
4. I found a patched hostapd that can support WPS . Where I can get these patch? 

Thanks for your help :)
 				
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c4linux
2008-08-29