[help]post lion aspire 5740g

hello guys I'm trying to install the lion on this laptop, everything works except the graphics card than a ATI 5470 with 512 mb.I can not set the resolution, but with no graphics enabler system info from qeci we go! Boot thumbnail photo etc. etc..
In fact if I put graphics enabler yes I can also see the clear cross bars only problem I see on the monitor 6 tiny screens!.
that way I can try to solve this thing?
Thanks to anyone who has solutions!
sorry for english!!

last progress!!