MAJOR!! Network adaptor problems

Hello,
I have a huge problem here. HELP!HELP!HELP!
I cannot access the internet. I printed a diagnostic test and these are the results
This machine does not have any installed network adaptors. The required network device
drivers may not have been installed. My computer worked last night fine. I accessed the internetw with no problems. I turned it off then this morning I rebooted the computer with no problems but I cannot access the internet.

Please HELP!