Old Gateway Drivers

I have an old gateway computer and the hard drive failed.  I purchased a new hard disk and installed it.  It installed fine and I was able to install XP and service pack 2 fine.  The problem now is that I cannot find drivers.  I went onto Gateway's web site and entered the serial number from the back of the computer, but apparently they no longer have the drivers available for download.  I was directed to mpc computers web site to download the drivers and when I went to that site, I got a page cannot be diaplayed.  Upon further investigation I found out that mpc computers is out of business.  I do not have an internet connection because I do not have NIC drivers.  How can I find the drivers?