[Windump] content of capture file

[Arto Inkala]

Hello,

I have used the following command with linux: tcpdump -w capture src port 80
and after browsing I will get readable html in the capture file.

However, if I use windump in windows 7, with the same parameters the 
output of the capture file is mostly unreadable binary. What will cause 
this and should I use some extra parameters with windump?

Regards,
     Arto