stavros demetriou

I have succesfully connected two PC's via an ethernet
card (one XP and one 98se) which they were working fine
for about one week when suddenly I lost the Interner
connection on the 2nd one (Win98se). I have ran the
wizard several times, I even formatted the 2nd PC and
installed again the Win98se in my desperation to fix the
problem but unseccesfully. I think the problem arosed
when I enabled the Internet Connection firewall on the XP
which I removed but problem persists. What protocols
should I use for the 2nd PC? HELP - I ran out of ideas!!!
Thanks