about cdrom:
it's an old problem on 98 os to loose your cdrom.
to get it back install the dos drivers incl. mscdex ,
if mscdex line got remarked just remove the remark from the spec. line
in autoexec.bat.
boot to dos commandprompt by pressing F8 and choose that you want dos.
chegg if the cdrom works
start windows by typing "win" at the prompt.

about sub7:
do a
netstat -a -n
is your machine listen on 0.0.0.0 :27374 ?