Solved! Dell inspirion b120 ethernet driver

Solution
http://support.dell.com/support/downloads/download.aspx?c=us&cs=555&l=en&s=biz&releaseid=R108904&SystemID=INSPIRON%20B120&servicetag=&os=WW1&osl=en&deviceid=2966&devlib=0&typecnt=0&vercnt=1&catid=-1&impid=-1&formatcnt=0&libid=5&typeid=-1&dateid=-1&formatid=-1&source=-1&fileid=141373

dunno if that link will work but here's how you get drivers from dell:
1. go to their support website
2. find drivers for your machine (inspiron b120)
3. look for network category
4. find broadcom x440 netowork adapter (make sure it's not a diagnostic utility)
5. download and install
http://support.dell.com/support/downloads/download.aspx?c=us&cs=555&l=en&s=biz&releaseid=R108904&SystemID=INSPIRON%20B120&servicetag=&os=WW1&osl=en&deviceid=2966&devlib=0&typecnt=0&vercnt=1&catid=-1&impid=-1&formatcnt=0&libid=5&typeid=-1&dateid=-1&formatid=-1&source=-1&fileid=141373

dunno if that link will work but here's how you get drivers from dell:
1. go to their support website
2. find drivers for your machine (inspiron b120)
3. look for network category
4. find broadcom x440 netowork adapter (make sure it's not a diagnostic utility)
5. download and install
 
Solution