I have four PC's networked through a Linksys router...all but one is running XP, the one is running 98

Only on my PC does this happed: When I restart the PC i am not able to access network connections..neither the internet nor the other 3 PC's. What i have to do is run the network wizzard once again in order to gain access.

Note that this only happens when i need to restart the PC...if i let it hibernate there is no problem.....

any ideas why this would be happening???