wifi tools

Hi all,
iam working as testing engineer on wifi.
Iam using pcap2air tool to send packets through athrose card(with madwifi driver).
But iam quite unhappy with this tool.
Anybody help me to have a tool on which i have total control.
Basically i want to send packets to air from pcap file, while sending i need to edit some of the fields and send to air.

Hope this forum will help me.
thanks guys.

Which Operating System are you using?

iam using CentOS 5.1 (linux distro).
hello,
I really need a tool to send packet capture to air.
I searched a lot. But couldn't find any.
I thought this form would help.
????????
please let me know if any one knows.