[Winpcap-users] capture ieee 802.11 frame

[suad alasady]

hello
 i would like to capture ieee 802.11 frame using libpcap library from one computer in ad hoc network and modify it by adding some information  and then send it to another node .the other node must check this information. i use linux fedora 14 operating system. 
1- what is the steps i follow to do that?
2- if there is an program code like this?
with my great thanks
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