Background:
 We need laptops that connect to the wireless network to use them in the lab.

mariabella:
 Dell Inspiron 1210 laptop
 Broadcom Corporation BCM4312 802.11b/g (rev 01) (PCIID: 14e4:4315 (rev 01))

What I did:
1. I followed the same steps I did for aldabella: http://nodus.ligo.caltech.edu:8080/40m/3623
 Except I unzipped R151517-pruned.zip.
   http://myspamb8.googlepages.com/R151517-pruned.zip

2. Note that the PCIID is important for driver selection. Not the model No.
 To check whether your driver selection is correct, run:
  # ndiswrapper -l
 after installing the driver.
 If the driver selection is wrong, it will return only:
  bcmwl5 : driver installed
 If correct, it will return:
  bcmwl5 : driver installed
         device (14E4:4315) present (alternate driver: hoge)
 This page has some information for the driver selection:
   https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx/Feisty_No-Fluff#Step%202:%20Download%20and%20Extract%20Drivers

Result:
 aldabella now connects to the wireless martian network.

Note:
 Broadcom official driver didn't work for mariabella, too.