network booting

I have a laptop that will not boot from CD, see:
http://www.experts-exchange.com/Hardware/Laptops_Notebooks/PC_Laptops/Q_23115497.html
The other option available for reinstalling booting is via the Realtek RTL8139 card.
Can you tell me how to use this?
I can get into the configuration menu by pressing Shift-F10 during start-up.
It has the following options:

Network Boot Protocol      RPL or PXE
Boot Order                        Int 18h or Int 19h or PnP/BEV(BBS) or ROM Disable

What do these mean?
How do I know if the network is running and then point it to a setup file?

Thanks
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sirjulioAsked:
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Brian PiercePhotographerCommented:
The boot from network option is most commonly used in a windows envionment to use PXE to boot to a server which has been set up with RIS (Remote Installation Services) or id newer replacement WDS, Windows deployment serviices. These are not trivial to set up see http://www.computerperformance.co.uk/w2k3/W2K3_RIS.htm
or http://msdn2.microsoft.com/en-us/library/aa967394(VS.85).aspx
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and235100Commented:
This is a good guide - but you need a couple of files from a Windows 2003 Server CD:
http://www.vandomburg.net/installing-windows-xp-from-usb/
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