ok, try downloading the intel ethernet
driver from the link i gave you above.
unfortunately i don't know which of the wireless
drivers you need. i haven't used ubuntu for a long time, there must be somewhere where it tells you what hardware you have in your machine, so you can chose the appropriate wifi
driver for your windows installation.
good luck and let us know how you get on! although i won't be able to personally reply as i'm off to bed now as it's 23.15 and i have an early start tomorrow. however there are many other forum members here who should be able to help if you have further problems.