Indeed. Please provide information for us to help you.
The outputs from the above commands, in addition to this one (capital C):
Those others again:
And, if you are half-way there:
Most importantly, can each user start a fresh thread with the outputs of all these (and any other relevant details about what has been tried already).
As for the OP request for a generic How-to - there is no such thing, since it is highly dependent on what wifi device you use.
If you are searching for a solution - use the above commands to identify the hardware you have, then google the exact hardware:
e.g. my lspci:
So I would search for AR2413.
08:04.0 Ethernet controller: Atheros Communications Inc. AR2413 802.11bg NIC (rev 01)
Also - one specific place to search for this is the ndiswrapper site: http://ndiswrapper.sourceforge.net/j...id,33/id,list/
Then at least you can provide some details if it still doesn't work.