it's working !
 

I finally succeeded in installing limewire when I got OS 9 with installer "installanywhere 4.5"
but now, a lot of other questions such as : "why can't I see some of my dowloaded files?" or "why cant' I see the uploads ?" or "how can I chat?"
if any of you have a direct ansewr, I would be very thankfull. Anyway, I'll also go and look in faq....
nice up and downloads to all.