I Google'ed the error message I recived and came up with several matches including this one below the only problem is these instructions are for Windows 95 and the page tells me to click on the network icon and click the TCP/IP protocol tab I cant find that also says I need to change my IP adress hope this helps!
http://support.microsoft.com/kb/q148863/
I recently hooked up two computers using a wired router, one running Windows XP and one running Windows 98 after having a very hard time attatching the ends to my own cable I finnaly got it to work...for a while after about two days of working fine I decided to try to make the two computers file share and I dont know what I did but now when ever I try to get online on the Windows 98 computer I get this message:
"The System Has Detected A Conflict for IP Adress 68.77.108.35 With The System Having Hardware Adress 00:40:F4:14:21:26."
and the Windows XP computer worked for a couple of days after I first started getting this message and today my modem support tool told me to un hook the router because it was having trouble connecting.
Can anyone help me with this?

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