minilogin ONLY allows 1 login account, and it is fixed as user: eqemu     pass: eqemu
fo more accounts you need to use publiclogin (not released for 3.6 yet)  Or use the main loginserver  at eqemu.net
for command referance:
world.exe /?
zone.exe /?
and possibly minilogin /?
for that matter, packetcollector.exe /?
just like thousands of other dos command line programs 
 
Kharanok:
Perhaps try opening mysql.exe, type 
use eq;
delete from accounts;
exit
then try creating the eqemu account again
world.exe adduser eqemu eqemu 200