All versions of Win 95 & 98 in a LAN can be crashed using a modified version of the 'win98-con'-Bug. The target must have at lea st one shared directory (read-only access is enough). You just have to execute a 'special' link in a HTML-File on your own machine. This will crash down the victim's machine in the L AN and maybe even in the Internet (I've not yet tested this possibility).