Problems with POST

Hi,

I've just started using the libwww.
I've compiled the 5.2.6 version and I don't really understand how to use
it for what I need to do.

I would like to POST data with format "a=b&c=d&..." followed by a MIME
file : everything needs to be in the same request.
I would like to know which actions, I must perform to Post these
information.
I've seen the examples given with the libwww. I don't know how I can
supplement them for my problem (notably the postform example) and even
if it would be useful to supplement them.

Thanks in advance for any help!

Best regards
Isabelle