Remotely reboot a Win-98 machine

Hi Sorry to be OT here, but it is kind of emergency. In a remote LAN, there is Linux-box / firewall, that I have full control over. Then there is one Win-98 machine, that has "samba" shared printer / HD in that LAN. This computer needs to be rebooted remotly. I had VNC running there, but now the user seems to have quit the VNC. I'm able to reach other win-98 machines thru their VNC okay, and see the shares, also in that "reboot" machine... Is there a way to make Win-98 boot thru this access that I have? Jaska.