ok sir,
i chose the specific channel as it was described in the videos {i mean the same way of the video,i chose the channel for my network},so am 100% sure of that step.
the AP is not in the same floor i am working , but still i can connect to it & it gives me an excellent signal {is it possible that i can connect to it but i can not inject to it because it is not in the same floor ?}
i toke a look in the near shops , but i did not find the card you suggest , on the other hand , i found another one which is called (senao sub-362{ext}) ,,
do you think it is good for the job ?
there is a link to its features:
hxxp://vvvvvv.senaousa.com/senao/NUB-362_EXT_-Datasheet_09192005.pdf



,,could you post me a link for learning that??
Try roaming the forums for a bit and you will notice that there are multiple threads addressing this very issue.
