The MADWifi project appears to be the place. Follow the above link to the madwifi sourceforge page.
It should not matter that it is a laptop or what make/model of laptop.
EDIT - while I don't see *specifically* the device "5001+
" many of the 5001's have the same chipset in them. Chances are good the driver will work.
EDIT2 - Your older post HERE
was looking for the 5000X
+ driver. Is this/not the same device?